Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Trong cu\u1ed9c s\u1ed1ng ch\u00fang ta, t\u00ednh ch\u1ea5t c\u1ee7a \u0111\u1ed3ng v\u00e0 h\u1ee3p kim c\u1ee7a \u0111\u1ed3ng c\u00f3 vai tr\u00f2 r\u1ea5t quan tr\u1ecdng trong \u0111\u1eddi s\u1ed1ng x\u00e3 h\u1ed9i. H\u00f4m nay, Vietlearn s\u1ebd g\u1eedi \u0111\u1ebfn c\u00e1c b\u1ea1n m\u1ed9t s\u1ed1 ki\u1ebfn ki\u1ebfn th\u1ee9c v\u1ec1 \u0111\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng c\u0169ng nh\u01b0 t\u00ednh ch\u1ea5t c\u1ee7a n\u00f3 trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y. Nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y s\u1ebd gi\u00fap b\u1ea1n c\u00f3 th\u1ec3 ti\u1ebfp thu m\u1ed9t c\u00e1ch nhanh ch\u00f3ng h\u01a1n. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u nh\u00e9!<\/p>\n\n\n\n
\u0110\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng<\/p>\n\n\n\n
\u0110\u1ecbnh ngh\u0129a<\/p>\n\n\n\n
\u0110\u1ed3ng l\u00e0 m\u1ed9t nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc trong b\u1ea3ng tu\u1ea7n ho\u00e0n v\u00e0 c\u00f3 k\u00ed hi\u1ec7u l\u00e0 Cu, s\u1ed1 nguy\u00ean t\u1eed b\u1eb1ng 29. T\u00ednh ch\u1ea5t c\u1ee7a \u0111\u1ed3ng r\u1ea5t d\u1ebbo dai v\u00e0 c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t, d\u1eabn \u0111i\u1ec7n t\u1ed1t n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t d\u1eabn \u0111i\u1ec7n v\u00e0 nhi\u1ec7t, s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, v\u00e0 l\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a m\u1ed9t s\u1ed1 h\u1ee3p kim c\u1ee7a c\u00e1c kim lo\u1ea1i kh\u00e1c.<\/p>\n\n\n\n
Kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed: 64 g\/mol<\/p>\n\n\n\n
\u0110\u1ed3ng v\u1ecb: 63Cu, 64Cu, 65Cu.<\/p>\n\n\n\n
\u0110\u1ed9 \u00e2m \u0111i\u1ec7n: 1,9<\/p>\n\n\n\n
Xem th\u00eam s\u01a1 l\u01b0\u1ee3ng v\u1ec1 Niken k\u1ebdm ch\u00ec thi\u1ebfc<\/p><\/blockquote>\n\n\n\n
T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a \u0111\u1ed3ng<\/p>\n\n\n\n
T\u00ednh ch\u1ea5t c\u1ee7a \u0111\u1ed3ng l\u00e0 kim lo\u1ea1i c\u00f3 m\u00e0u \u0111\u1ecf, d\u1ec5 k\u00e9o s\u1ee3i v\u00e0 l\u00e0m m\u1ecfng. \u0110\u1ed9 d\u1eabn nhi\u1ec7t v\u00e0 di\u1ec7n r\u1ea5t t\u1ed1t ch\u1ec9 k\u00e9m sau b\u1ea1c.<\/p>\n\n\n\n
D = 8,98g\/cm3; tonc= 1083oC<\/p>\n\n\n\n
\u0110\u1ec3 nh\u1eadn bi\u1ebft th\u00ec \u0111\u00f4ng \u0111\u01a1n ch\u1ea5t c\u00f3 m\u00e0u \u0111\u1ecf, t\u00ednh ch\u1ea5t h\u1ee3p kim \u0111\u1ed3ng khi \u1edf tr\u1ea1ng th\u00e1i dung d\u1ecbch s\u1ebd c\u00f3 m\u00e0u xanh \u0111\u1eb7c tr\u01b0ng.<\/p>\n\n\n\n
H\u00f2a tan Cu v\u00e0o dung d\u1ecbch HNO3 lo\u00e3ng, th\u1ea5y thu \u0111\u01b0\u1ee3c dung d\u1ecbch c\u00f3 m\u00e0u xanh lam, tho\u00e1t ra kh\u00ed kh\u00f4ng m\u00e0u h\u00f3a n\u00e2u trong kh\u00f4ng kh\u00ed (NO).<\/p>\n\n\n\n
3Cu + 8HNO3 \u2192 3Cu(NO3)2 + 2NO + 4H2O<\/code><\/pre>\n\n\n\nT\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a \u0111\u1ed3ng<\/p>\n\n\n\n
\u0110\u1ed3ng l\u00e0 m\u1ed9t kim lo\u1ea1i c\u00f3 t\u00ednh kh\u1eed y\u1ebfu v\u00e0 k\u00e9m ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n
T\u00e1c d\u1ee5ng v\u1edbi phi kim<\/p>\n\n\n\n
Cu ph\u1ea3n \u1ee9ng m\u1ea1nh v\u1edbi oxi, khi \u0111\u01b0\u1ee3c \u0111un n\u00f3ng t\u1ea1o ra CuO, \u0111\u00e2y l\u00e0 l\u1edbp b\u1ea3o v\u1ec7 gi\u00fap Cu kh\u00f4ng b\u1ecb oxi ho\u00e1 ti\u1ebfp t\u1ee5c.<\/p>\n\n\n\n
2Cu + O2 \u2192 CuO<\/code><\/pre>\n\n\n\nKhi ti\u1ebfp t\u1ee5c \u0111un n\u00f3ng t\u1edbi nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t \u0111\u1ecbnh, kho\u1ea3ng 800 \u2013 1000oC<\/p>\n\n\n\n
CuO + Cu \u2192 Cu2O (\u0111\u1ecf)<\/code><\/pre>\n\n\n\nT\u00e1c d\u1ee5ng tr\u1ef1c ti\u1ebfp v\u1edbi Cl2, Br2, S\u2026<\/p>\n\n\n\n
Cu + Cl2 \u2192 CuCl2\n\n Cu + S \u2192 CuS<\/code><\/pre>\n\n\n\nKim lo\u1ea1i \u0111\u1ed3ng c\u00f3 t\u00ednh kh\u1eed r\u1ea5t y\u1ebfu<\/p>\n\n\n\n
T\u00e1c d\u1ee5ng v\u1edbi axit<\/p>\n\n\n\n
Khi cho Cu v\u00e0o dung d\u1ecbch HCl, H2SO4 lo\u00e3ng ch\u00fang s\u1ebd kh\u00f4ng x\u1ea3y ra ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc.<\/p>\n\n\n\n
Khi c\u00f3 oxi, \u0111\u1ed3ng t\u00e1c d\u1ee5ng v\u1edbi dung d\u1ecbch HCl, t\u1ea1i n\u01a1i ti\u1ebfp x\u00fac gi\u1eefa dung d\u1ecbch axit v\u1edbi kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n
2Cu + 4HCl + O2 \u2192 2CuCl2 + 2 H2O<\/code><\/pre>\n\n\n\nT\u00e1c d\u1ee5ng v\u1edbi dung d\u1ecbch HNO3, H2SO4 \u0111\u1eb7c :<\/p>\n\n\n\n
Cu + 2H2SO4 \u0111 \u2192 CuSO4 + SO2 + H2O\n\n Cu + 4HNO3 \u0111 \u2192 Cu(NO3)2 + 2NO2 + 2H2O\n\n 3Cu + 8HNO3 lo\u00e3ng \u2192 3Cu(NO3)2 + 2NO + 4H2O<\/code><\/pre>\n\n\n\nT\u00e1c d\u1ee5ng v\u1edbi dung d\u1ecbch mu\u1ed1i<\/p>\n\n\n\n
Khi oxit \u0111\u1ed3ng t\u00e1c d\u1ee5ng v\u1edbi dung d\u1ecbch mu\u1ed1i, ch\u00fang s\u1ebd kh\u1eed \u0111\u01b0\u1ee3c ion kim lo\u1ea1i \u0111\u1ee9ng sau n\u00f3 trong h\u1ed7n h\u1ee3p dung d\u1ecbch mu\u1ed1i \u0111\u00f3.<\/p>\n\n\n\n
Cu + 2AgNO3 \u2192 Cu(NO3)2 + 2Ag\n\n Cu + 2Fe3+ \u2192 Cu2+ + 2Fe2+<\/code><\/pre>\n\n\n\nCh\u00fa \u00fd v\u1edbi mu\u1ed1i nitrat trong m\u00f4i tr\u01b0\u1eddng axit:<\/p>\n\n\n\n
3Cu + 8H++ 2NO3\u2013 \u2192 3Cu2++2NO + 4H2O<\/code><\/pre>\n\n\n\nXem th\u00eam t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a Crom<\/p><\/blockquote>\n\n\n\n
\u0110\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
Ch\u00fang \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o th\u00e0nh v\u1eadt li\u1ec7u \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y<\/p>\n\n\n\n
D\u1ef1a v\u00e0o t\u00ednh d\u1ebbo, d\u1eabn \u0111i\u1ec7n, d\u1eabn nhi\u1ec7t c\u1ee7a \u0111\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng m\u00e0 ch\u00fang s\u1ebd \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng cho c\u00e1c ng\u00e0nh ngh\u1ec1 kh\u00e1c nhau:<\/p>\n\n\n\n
\u0110\u1ed3ng thau : H\u1ee3p kim k\u1ebft h\u1ee3p gi\u1eefa Cu \u2013 Zn, c\u00f3 t\u00ednh c\u1ee9ng v\u00e0 b\u1ec1n h\u01a1n Cu \u0111\u01b0\u1ee3c d\u00f9ng ch\u1ebf t\u1ea1o chi ti\u1ebft m\u00e1y m\u00f3c trong s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n
\u0110\u1ed3ng b\u1ea1ch : H\u1ee3p kim k\u1ebft h\u1ee3p gi\u1eefa Cu \u2013 Ni, c\u00f3 t\u00ednh b\u1ec1n \u0111\u1eb9p, kh\u1ea3 n\u0103ng kh\u00f4ng b\u1ecb \u0103n m\u00f2n trong n\u01b0\u1edbc bi\u1ec3n n\u00ean \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00f4ng nghi\u1ec7p \u0111\u00f3ng t\u00e0u th\u1ee7y.<\/p>\n\n\n\n
\u0110\u1ed3ng thanh : H\u1ee3p kim k\u1ebft h\u1ee3p gi\u1eefa Cu \u2013 Sn, d\u00f9ng ch\u1ebf t\u1ea1o m\u00e1y m\u00f3c, thi\u1ebft b\u1ecb.<\/p>\n\n\n\n
H\u1ee3p kim k\u1ebft h\u1ee3p gi\u1eefa Cu \u2013 Au \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 trang tr\u00ed.<\/p>\n\n\n\n
H\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng<\/p>\n\n\n\n
Hai h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng c\u00e1c b\u1ea1n c\u1ea7n n\u1eb1m l\u00f2ng bao g\u1ed3m: \u0110\u1ed3ng(II) hi\u0111roxit v\u00e0 \u0110\u1ed3ng (II) oxit. T\u00ednh ch\u1ea5t h\u1ee3p kim c\u1ee7a \u0111\u1ed3ng c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\n
\u0110\u1ed3ng(II) hi\u0111roxit: Cu(OH)2<\/p>\n\n\n\n
V\u1ec1 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, Cu(OH)2 l\u00e0 ch\u1ea5t r\u1eafn, c\u00f3 m\u00e0u xanh l\u01a1 v\u00e0 kh\u00f4ng tan trong n\u01b0\u1edbc, c\u00f3 th\u1ec3 nh\u1eadn bi\u1ebft b\u1eb1ng c\u00e1ch mang t\u00e1c d\u1ee5ng v\u1edbi HCL t\u1ea1o ra dung d\u1ecbch c\u00f3 m\u00e0u xanh lam.<\/p>\n\n\n\n
V\u1ec1 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc, Cu(OH)2 c\u00f3 \u0111\u1ea7y \u0111\u1ee7 c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a \u0111\u1ed3ng nh\u01b0:<\/p>\n\n\n\n
T\u00e1c d\u1ee5ng v\u1edbi axit: Cu(OH)2 + H2SO4 \u2192 CuSO4 + 2H2O<\/p>\n\n\n\n
Ph\u1ea3n \u1ee9ng nhi\u1ec7t ph\u00e2n: Cu(OH)2 \u2192 CuO + HO<\/p>\n\n\n\n
H\u00f2a tan trong dung d\u1ecbch amoniac: Cu(OH)2 + NH3 \u2192 [Cu(NH3)4]2+ + 2OH\u2013<\/p>\n\n\n\n
H\u00f2a tan trong ancol \u0111a ch\u1ee9c:<\/p>\n\n\n\n
Cu(OH)2 + 2C3H5(OH)3 \u2192 [C3H5(OH)2O]2Cu + 2H2O<\/p>\n\n\n\n
T\u00e1c d\u1ee5ng v\u1edbi andehit: 2Cu(OH)2 + NaOH + HCHO \u2192 HCOONa + Cu2O\u2193 + 3H2O<\/p>\n\n\n\n
C\u00f3 x\u1ea3y ra ph\u1ea3n \u1ee9ng m\u00e0u biure khi t\u00e1c d\u1ee5ng v\u1edbi c\u00e1c peptit trong m\u00f4i tr\u01b0\u1eddng ki\u1ec1m.<\/p>\n\n\n\n
\u0110\u1ed3ng (II) oxit: CuO<\/p>\n\n\n\n
V\u1ec1 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, CuO t\u1ed3n t\u1ea1i trong t\u1ef1 nhi\u00ean \u1edf d\u1ea1ng b\u1ed9t v\u00e0 c\u00f3 m\u00e0u \u0111en.<\/p>\n\n\n\n
V\u1ec1 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc, CuO c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c ch\u1ea5t nh\u01b0:<\/p>\n\n\n\n
T\u00e1c d\u1ee5ng v\u1edbi axit: CuO + 2HCl \u2192 CuCl2 + H2O<\/p>\n\n\n\n
T\u00e1c d\u1ee5ng v\u1edbi oxit axit: 3CuO + P2O5 \u2192 Cu3(PO4)2<\/p>\n\n\n\n
T\u00e1c d\u1ee5ng v\u1edbi ch\u1ea5t kh\u1eed: H2 + CuO \u2192 Cu + H2O<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng<\/p>\n\n\n\n
B\u00e0i 1: Cho 3,2 gam Cu t\u00e1c d\u1ee5ng v\u1edbi 100ml dung d\u1ecbch h\u1ed7n h\u1ee3p (HNO3 0,8M + H2SO4 0,2M), s\u1ea3n ph\u1ea9m kh\u1eed duy nh\u1ea5t c\u1ee7a HNO3 l\u00e0 NO. Th\u1ec3 t\u00edch kh\u00ed NO (\u0111ktc) l\u00e0<\/p>\n\n\n\n
0,672 l\u00edt. B. 0,336 l\u00edt.<\/p>\n\n\n\n
0,747 l\u00edt. D. 1,792 l\u00edt.<\/p>\n\n\n\n
B\u00e0i 2: Cho c\u00e1c m\u00f4 t\u1ea3 sau:<\/p>\n\n\n\n
(1). Ho\u00e0 tan Cu b\u1eb1ng dung d\u1ecbch HCl \u0111\u1eb7c n\u00f3ng gi\u1ea3i ph\u00f3ng kh\u00ed H2<\/p>\n\n\n\n
(2). \u00d0\u1ed3ng d\u1eabn nhi\u1ec7t v\u00e0 d\u1eabn \u0111i\u1ec7n t\u1ed1t, ch\u1ec9 thua Ag<\/p>\n\n\n\n
(3). \u00d0\u1ed3ng kim lo\u1ea1i c\u00f3 th\u1ec3 tan trong dung d\u1ecbch FeCl3<\/p>\n\n\n\n
(4). C\u00f3 th\u1ec3 ho\u00e0 tan Cu trong dung d\u1ecbch HCl khi c\u00f3 m\u1eb7t O2<\/p>\n\n\n\n
(5). \u00d0\u1ed3ng thu\u1ed9c nh\u00f3m kim lo\u1ea1i nh\u1eb9 (d = 8,98 g\/cm3)<\/p>\n\n\n\n
(6). Kh\u00f4ng t\u1ed3n t\u1ea1i Cu2O; Cu2S<\/p>\n\n\n\n
S\u1ed1 m\u00f4 t\u1ea3 \u0111\u00fang l\u00e0:<\/p>\n\n\n\n
A. 1. B. 2.<\/p>\n\n\n\n
C. 3 . D. 4.<\/p>\n\n\n\n
B\u00e0i 3: Ch\u1ea5t l\u1ecfng Booc\u0111o l\u00e0 h\u1ed7n h\u1ee3p CuSO4 v\u00e0 v\u00f4i t\u00f4i trong n\u01b0\u1edbc theo m\u1ed9t t\u1ec9 l\u1ec7 nh\u1ea5t \u0111\u1ecbnh, ch\u1ea5t l\u1ecfng n\u00e0y ph\u1ea3i h\u01a1i c\u00f3 t\u00ednh ki\u1ec1m (v\u00ec n\u1ebfu CuSO4 d\u01b0 s\u1ebd th\u1ea5m v\u00e0o m\u00f4 th\u1ef1c v\u1eadt g\u00e2y h\u1ea1i l\u1edbn cho c\u00e2y). Booc\u0111o l\u00e0 m\u1ed9t ch\u1ea5t di\u1ec7t n\u1ea5m cho c\u00e2y r\u1ea5t hi\u1ec7u qu\u1ea3 n\u00ean \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 l\u00e0m v\u01b0\u1eddn \u01b0a d\u00f9ng, h\u01a1n n\u1eefa vi\u1ec7c pha ch\u1ebf n\u00f3 c\u0169ng r\u1ea5t \u0111\u01a1n gi\u1ea3n. \u0110\u1ec3 ph\u00e1t hi\u1ec7n CuSO4 d\u01b0 nhanh, c\u00f3 th\u1ec3 d\u00f9ng ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc n\u00e0o sau \u0111\u00e2y ?<\/p>\n\n\n\n
L\u1eddi k\u1ebft<\/p>\n\n\n\n
Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m v\u1ec1 \u0111\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng m\u00e0 Vietlearn mu\u1ed1n g\u1eedi \u0111\u1ebfn cho c\u00e1c b\u1ea1n h\u1ecdc sinh<\/a>. V\u1edbi hy v\u1ecdng gi\u00fap c\u00e1c b\u1ea1n h\u1ecdc sinh<\/a> d\u1ec5 d\u00e0ng ti\u1ebfp thu ki\u1ebfn th\u1ee9c v\u1ec1 nguy\u00ean t\u1ed1 n\u00e0y. N\u1ebfu c\u00e1c b\u1ea1n c\u00f2n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam c\u00e1c h\u1ee3p ch\u1ea5t kh\u00e1c th\u00ec hay truy c\u1eadp ngay v\u00e0o website: Vietlearn.org\/ c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 t\u00ecm hi\u1ec3u nh\u00e9!<\/p>\n\n\n\n
Xem th\u00eam c\u00e1c b\u00e0i vi\u1ebft c\u00f3 c\u00f9ng ch\u1ee7 \u0111\u1ec1:<\/p><\/blockquote>\n\n\n\n
T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u1eb7c tr\u01b0ng c\u1ee7a Kim lo\u1ea1i la\u0300 gi\u0300 \u2013 H\u00f3a h\u1ecdc l\u1edbp 9<\/p>\n\n\n\n
N\u1ed3ng \u0111\u1ed9 dung d\u1ecbch l\u00e0 g\u00ec h\u00f3a 8 \u2013 Nh\u1eefng l\u01b0u \u00fd khi h\u1ecdc<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Trong cu\u1ed9c s\u1ed1ng ch\u00fang ta, t\u00ednh ch\u1ea5t c\u1ee7a \u0111\u1ed3ng v\u00e0 h\u1ee3p kim c\u1ee7a \u0111\u1ed3ng c\u00f3 vai tr\u00f2 r\u1ea5t quan tr\u1ecdng trong \u0111\u1eddi s\u1ed1ng x\u00e3 h\u1ed9i. H\u00f4m nay, Vietlearn s\u1ebd g\u1eedi \u0111\u1ebfn c\u00e1c b\u1ea1n m\u1ed9t s\u1ed1 ki\u1ebfn ki\u1ebfn th\u1ee9c v\u1ec1 \u0111\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng c\u0169ng nh\u01b0 t\u00ednh ch\u1ea5t […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[8,9],"tags":[],"class_list":["post-1071","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-toan-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=1071"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1071\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}