Cho m\u1ed9t vi\u00ean k\u1eb9o v\u00e0o m\u1ed3m, trong ch\u1ed1c l\u00e1t ta s\u1ebd c\u1ea3m th\u1ea5y v\u1ecb ng\u1ecdt, c\u00f2n n\u1ebfu cho m\u1ed9t vi\u00ean \u0111\u00e1 v\u00e0o m\u1ed3m th\u00ec \u0111\u1ebfn su\u1ed1t c\u1ea3 ng\u00e0y c\u0169ng kh\u00f4ng c\u1ea3m th\u1ea5y g\u00ec. L\u00fd do h\u1ebft s\u1ee9c \u0111\u01a1n gi\u1ea3n: \u0111\u01b0\u1eddng tan trong n\u01b0\u1edbc c\u00f2n vi\u00ean \u0111\u00e1 th\u00ec g\u1ea7n nh\u01b0 kh\u00f4ng ho\u00e0 tan trong n\u01b0\u1edbc.<\/p>\n\n\n\n
N\u00f3i th\u1eadt ch\u00ednh x\u00e1c th\u00ec th\u1eadt ra tr\u00ean th\u1ebf gi\u1edbi kh\u00f4ng c\u00f3 ch\u1ea5t g\u00ec ho\u00e0n to\u00e0n kh\u00f4ng tan trong n\u01b0\u1edbc, ch\u1ec9 c\u00f3 \u0111\u1ed9 ho\u00e0 tan c\u1ee7a ch\u00fang trong n\u01b0\u1edbc nhi\u1ec1u ho\u1eb7c \u00edt. H\u00e3y l\u1ea5y b\u1ea1c l\u00e0m v\u00ed d\u1ee5, n\u1ebfu \u0111\u1ef1ng n\u01b0\u1edbc trong m\u1ed9t c\u00e1i b\u00e1t b\u1eb1ng b\u1ea1c th\u00ec l\u01b0\u1ee3ng b\u1ea1c ho\u00e0 tan v\u00e0o n\u01b0\u1edbc s\u1ebd c\u00f3 t\u1ec9 l\u1ec7 kho\u1ea3ng 1 ph\u1ea7n t\u1ec9. V\u1edbi l\u01b0\u1ee3ng b\u1ea1c nh\u1ecf nh\u01b0 v\u1eady th\u00ec ngay \u0111\u1ebfn vi\u1ec7c ph\u00e2n t\u00edch, ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c c\u0169ng kh\u00e1 kh\u00f3, nh\u01b0ng c\u0169ng \u0111\u1ee7 \u0111\u1ec3 di\u1ec7t c\u00e1c lo\u1ea1i vi khu\u1ea9n s\u1ed1ng trong n\u01b0\u1edbc.<\/p>\n\n\n\n
N\u00f3i chung m\u1ecdi ch\u1ea5t r\u1eafn \u0111\u1ec1u \u00edt nhi\u1ec1u ho\u00e0 tan trong n\u01b0\u1edbc, \u0111\u1ed9 ho\u00e0 tan c\u1ee7a c\u00e1c ch\u1ea5t t\u0103ng theo nhi\u1ec7t \u0111\u1ed9; nhi\u1ec7t \u0111\u1ed9 c\u00e0ng t\u0103ng th\u00ec \u0111\u1ed9 ho\u00e0 tan c\u00e0ng l\u1edbn v\u00e0 t\u1ed1c \u0111\u1ed9 ho\u00e0 tan c\u00e0ng nhanh. C\u00e1c ch\u1ea5t nh\u01b0 \u0111\u01b0\u1eddng, kali nitrat l\u00e0 nh\u1eefng ch\u1ea5t c\u00f3 t\u00ednh ch\u1ea5t nh\u01b0 v\u1eady. V\u1edbi kali nitrat, \u1edf 0\u00b0C, 100g ho\u00e0 tan 13,3g kali nitrat; \u1edf 100\u00b0C, \u0111\u1ed9 ho\u00e0 tan c\u1ee7a kali nitrat l\u00e0 247g, t\u0103ng kho\u1ea3ng 18,6 l\u1ea7n. Nh\u01b0 v\u1eady mu\u1ed1i kali nitrat c\u00f3 \u0111\u1ed9 ho\u00e0 tan t\u0103ng r\u1ea5t nhanh theo nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n
C\u0169ng c\u00f3 nh\u1eefng ch\u1ea5t m\u00e0 \u0111\u1ed9 ho\u00e0 tan t\u0103ng kh\u00f4ng nhi\u1ec1u l\u1eafm theo s\u1ef1 t\u0103ng nhi\u1ec7t \u0111\u1ed9: V\u00ed d\u1ee5 mu\u1ed1i \u0103n \u1edf 20\u00b0C c\u00f3 \u0111\u1ed9 ho\u00e0 tan l\u00e0 36g trong 100g n\u01b0\u1edbc, khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn 100\u00b0C \u0111\u1ed9 ho\u00e0 tan ch\u1ec9 l\u00e0 39,1g, ngh\u0129a l\u00e0 ch\u1ec9 t\u0103ng 3,1g.<\/p>\n\n\n\n
\u0110\u1ebfn \u0111\u00e2y ch\u1eafc c\u00e1c b\u1ea1n c\u0169ng \u0111\u00e3 r\u00f5 l\u00e0: khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 ch\u1ec9 l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 ho\u00e0 tan m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng l\u1edbn l\u1eafm \u0111\u1ebfn \u0111\u1ed9 ho\u00e0 tan. Th\u1ef1c t\u1ebf trong c\u00e1c nh\u00e0 m\u00e1y, ng\u01b0\u1eddi ta th\u01b0\u1eddng d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p khu\u1ea5y tr\u1ed9n \u0111\u1ec3 t\u0103ng \u0111\u1ed9 ti\u1ebfp x\u00fac c\u1ee7a mu\u1ed1i \u0103n v\u1edbi n\u01b0\u1edbc \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 ho\u00e0 tan.<\/p>\n\n\n\n
Th\u1eadm ch\u00ed c\u0169ng c\u00f3 nh\u1eefng ch\u1ea5t khi t\u0103ng nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 ho\u00e0 tan kh\u00f4ng t\u0103ng m\u00e0 c\u00f2n gi\u1ea3m. V\u00ed d\u1ee5 v\u1edbi th\u1ea1ch cao \u0111\u1ed9 ho\u00e0 tan trong n\u01b0\u1edbc s\u00f4i nh\u1ecf h\u01a1n trong n\u01b0\u1edbc l\u1ea1nh.<\/p>\n\n\n\n
V\u1edbi c\u00e1c ch\u1ea5t kh\u00ed th\u00ec khi t\u0103ng nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 ho\u00e0 tan l\u1ea1i gi\u1ea3m, \u0111\u1ed9 ho\u00e0 tan c\u00e1c ch\u1ea5t kh\u00ed t\u0103ng theo \u00e1p su\u1ea5t. \u0110\u1ed9 ho\u00e0 tan c\u00e1c ch\u1ea5t kh\u00ed ph\u1ee5 thu\u1ed9c b\u1ea3n ch\u1ea5t ch\u1ea5t kh\u00ed. V\u00ed d\u1ee5 \u1edf \u00e1p su\u1ea5t th\u01b0\u1eddng v\u00e0 nhi\u1ec7t \u0111\u1ed9 10\u00b0C, 100g n\u01b0\u1edbc ho\u00e0 tan 0,000174g kh\u00ed hy\u0111ro, th\u1ebf nh\u01b0ng l\u1ea1i ho\u00e0 tan \u0111\u1ebfn 68,4g kh\u00ed amoniac. C\u00f3 \u0111i\u1ec1u \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 s\u00f4i, \u0111\u1ed9 ho\u00e0 tan c\u00e1c ch\u1ea5t kh\u00ed \u0111\u1ec1u b\u1eb1ng kh\u00f4ng.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: S\u1ef1 ho\u00e0 tan; \u0110\u1ed9 ho\u00e0 tan.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Cho m\u1ed9t vi\u00ean k\u1eb9o v\u00e0o m\u1ed3m, trong ch\u1ed1c l\u00e1t ta s\u1ebd c\u1ea3m th\u1ea5y v\u1ecb ng\u1ecdt, c\u00f2n n\u1ebfu cho m\u1ed9t vi\u00ean \u0111\u00e1 v\u00e0o m\u1ed3m th\u00ec \u0111\u1ebfn su\u1ed1t c\u1ea3 ng\u00e0y c\u0169ng kh\u00f4ng c\u1ea3m th\u1ea5y g\u00ec. L\u00fd do h\u1ebft s\u1ee9c \u0111\u01a1n gi\u1ea3n: \u0111\u01b0\u1eddng tan trong n\u01b0\u1edbc c\u00f2n vi\u00ean \u0111\u00e1 th\u00ec g\u1ea7n nh\u01b0 kh\u00f4ng ho\u00e0 tan trong n\u01b0\u1edbc. N\u00f3i […]<\/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":[8,15],"tags":[],"class_list":["post-7765","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7765","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=7765"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7765\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7765"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7765"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}