Ng\u00e0y nay do tr\u00ecnh \u0111\u1ed9 ph\u00e1t tri\u1ec3n c\u1ee7a x\u00e3 h\u1ed9i, \u0111\u00e3 xu\u1ea5t hi\u1ec7n nhi\u1ec1u \u0111\u01b0\u1eddng cao t\u1ed1c. Tr\u00ean c\u00e1c \u0111\u01b0\u00f2ng cao t\u1ed1c, c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng c\u00f3 th\u1ec3 \u0111i l\u1ea1i v\u1edbi t\u1ed1c \u0111\u1ed9 r\u1ea5t cao. Tr\u00ean c\u00e1c \u0111\u01b0\u1eddng cao t\u1ed1c n\u00e0y n\u1ebfu l\u00e1i xe \u0111\u00e3 u\u1ed1ng r\u01b0\u1ee3u th\u00ec r\u1ea5t d\u1ec5 x\u1ea3y ra tai n\u1ea1n. V\u00ec v\u1eady c\u01a1 quan qu\u1ea3n l\u00fd giao th\u00f4ng nghi\u00eam c\u1ea5m c\u00e1c l\u00e1i xe \u0111i\u1ec1u khi\u1ec3n xe c\u1ed9 sau khi \u0111\u00e3 u\u1ed1ng r\u01b0\u1ee3u.<\/p>\n\n\n\n
\u0110\u1ec3 ki\u1ec3m tra c\u00e1c l\u00e1i xe c\u00f3 u\u1ed1ng r\u01b0\u1ee3u hay kh\u00f4ng khi \u0111\u00e3 l\u00e1i xe, c\u00e1c c\u1ea3nh s\u00e1t giao th\u00f4ng c\u1ea7n c\u00f3 c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m tra \u0111\u01a1n gi\u1ea3n nh\u01b0ng ph\u1ea3i ch\u00ednh x\u00e1c, nhanh ch\u00f3ng. Mu\u1ed1n l\u00e0m \u0111\u01b0\u1ee3c vi\u1ec7c \u0111\u00f3 c\u00e1c nh\u00e2n vi\u00ean ki\u1ec3m tra giao th\u00f4ng ph\u1ea3i nh\u1edd \u0111\u1ebfn ho\u00e1 h\u1ecdc.<\/p>\n\n\n\n
Cho d\u00f9 vi\u1ec7c ph\u00e2n t\u00edch \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh theo ph\u01b0\u01a1ng ph\u00e1p n\u00e0o th\u00ec c\u0169ng ph\u1ea3i \u0111\u1ea1t y\u00eau c\u1ea7u l\u00e0 nhanh ch\u00f3ng, ch\u00ednh x\u00e1c, ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c c\u00e1c l\u00e1i xe c\u00f3 u\u1ed1ng r\u01b0\u1ee3u hay kh\u00f4ng.<\/p>\n\n\n\n
Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a c\u00e1c lo\u1ea1i th\u1ee9c n\u01b0\u1edbc u\u1ed1ng c\u00f3 c\u1ed3n l\u00e0 r\u01b0\u1ee3u etylic. \u0110\u1eb7c t\u00ednh ch\u1ee7 y\u1ebfu c\u1ee7a r\u01b0\u1ee3u etylic l\u00e0 d\u1ec5 b\u1ecb oxi ho\u00e1 v\u00e0 khi r\u01b0\u1ee3u g\u1eb7p c\u00e1c ch\u1ea5t oxy ho\u00e1 th\u00ec ch\u1ea5t oxy ho\u00e1 d\u1ec5 kh\u1eed \u0111\u1ec3 tr\u1edf th\u00e0nh d\u1ea1ng kh\u1eed t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u1ea5t oxy ho\u00e1 \u0111\u00f3. C\u00f3 r\u1ea5t nhi\u1ec1u ch\u1ea5t oxy ho\u00e1 c\u00f3 th\u1ec3 t\u00e1c d\u1ee5ng v\u1edbi r\u01b0\u1ee3u nh\u01b0ng ng\u01b0\u1eddi ta ch\u1ecdn m\u1ed9t ch\u1ea5t oxy ho\u00e1 l\u00e0 oxit crom ho\u00e1 tr\u1ecb +6 c\u00f3 c\u00f4ng th\u1ee9c l\u00e0 CrO3. \u0110\u00e2y l\u00e0 m\u1ed9t ch\u1ea5t oxy ho\u00e1 r\u1ea5t m\u1ea1nh, l\u00e0 ch\u1ea5t \u1edf d\u1ea1ng k\u1ebft tinh th\u00e0nh tinh th\u1ec3 m\u00e0u v\u00e0ng da cam. B\u1ed9t oxit crom ho\u00e1 tr\u1ecb 6+ khi g\u1eb7p r\u01b0\u1ee3u etylic s\u1ebd b\u1ecb kh\u1eed th\u00e0nh oxit crom ho\u00e1 tr\u1ecb ba (+3). Crom (III) oxit l\u00e0 h\u1ee3p ch\u1ea5t c\u00f3 m\u00e0u xanh \u0111en.<\/p>\n\n\n\n
C\u00e1c c\u1ea3nh s\u00e1t giao th\u00f4ng s\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 ph\u00e2n t\u00edch c\u00f3 ch\u1ee9a b\u1ed9t crom (VI) oxit. Khi l\u00e1i xe h\u00e0 h\u01a1i th\u1edf v\u00e0o d\u1ee5ng c\u1ee5 ph\u00e2n t\u00edch, n\u1ebfu trong h\u01a1i th\u1edf c\u00f3 ch\u1ee9a h\u01a1i r\u01b0\u1ee3u th\u00ec h\u01a1i r\u01b0\u1ee3u s\u1ebd t\u00e1c d\u1ee5ng v\u1edbi crom (VI) oxit v\u00e0 bi\u1ebfn th\u00e0nh crom (III) oxit, khi \u0111\u00f3 b\u1ed9t s\u1ebd chuy\u1ec3n th\u00e0nh m\u00e0u xanh \u0111en. \u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb ki\u1ec3m tra r\u01b0\u1ee3u h\u1ebft s\u1ee9c nh\u1ea1y v\u00e0 kh\u00f4ng ng\u01b0\u1eddi l\u00e1i xe n\u00e0o \u0111\u00e3 u\u1ed1ng r\u01b0\u1ee3u m\u00e0 c\u00f3 th\u1ec3 l\u1ecdt l\u01b0\u1edbi. \u0110\u00e2y l\u00e0 bi\u1ec7n ph\u00e1p nh\u1eb1m c\u1ea5m c\u00e1c l\u00e1i xe \u0111\u00e3 u\u1ed1ng r\u01b0\u1ee3u m\u00e0 l\u1ea1i l\u00e1i xe, ng\u0103n ch\u1eb7n x\u1ea3y ra tai n\u1ea1n \u0111\u00e1ng ti\u1ebfc.<\/p>\n\n\n\n
V\u1edbi c\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m tra ki\u1ec3u c\u0169, s\u1ef1 \u0111\u1ed5i m\u00e0u c\u1ee7a crom oxit \u0111\u01b0\u1ee3c b\u1ed9 c\u1ea3m bi\u1ebfn \u0111i\u1ec7n t\u1eed nh\u1eadn d\u1ea1ng v\u00e0 chuy\u1ec3n th\u00e0nh t\u00edn hi\u1ec7u \u00e2m thanh (v\u00ed d\u1ee5 ti\u1ebfng ong k\u00eau) \u0111\u1ec3 b\u00e1o cho nh\u00e2n vi\u00ean ki\u1ec3m tra. Ng\u00e0y nay v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a khoa h\u1ecdc k\u1ef9 thu\u1eadt, s\u1ef1 \u0111\u1ed5i m\u00e0u \u0111\u01b0\u1ee3c ghi nh\u1eadn v\u00e0 th\u00f4ng qua k\u1ef9 thu\u1eadt s\u1ed1 s\u1ebd hi\u1ec7n th\u00e0nh ch\u1eef s\u1ed1 ho\u1eb7c b\u1eb1ng l\u1eddi v\u0103n tr\u00ean m\u1ea1ng tinh th\u1ec3 l\u1ecfng nh\u1edd \u0111\u00f3 ki\u1ec3m tra vi\u00ean s\u1ebd \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c m\u1ee9c \u0111\u1ed9 u\u1ed1ng r\u01b0\u1ee3u c\u1ee7a l\u00e1i xe.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: R\u01b0\u1ee3u; Crom (VI) oxit.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ng\u00e0y nay do tr\u00ecnh \u0111\u1ed9 ph\u00e1t tri\u1ec3n c\u1ee7a x\u00e3 h\u1ed9i, \u0111\u00e3 xu\u1ea5t hi\u1ec7n nhi\u1ec1u \u0111\u01b0\u1eddng cao t\u1ed1c. Tr\u00ean c\u00e1c \u0111\u01b0\u00f2ng cao t\u1ed1c, c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng c\u00f3 th\u1ec3 \u0111i l\u1ea1i v\u1edbi t\u1ed1c \u0111\u1ed9 r\u1ea5t cao. Tr\u00ean c\u00e1c \u0111\u01b0\u1eddng cao t\u1ed1c n\u00e0y n\u1ebfu l\u00e1i xe \u0111\u00e3 u\u1ed1ng r\u01b0\u1ee3u th\u00ec r\u1ea5t d\u1ec5 x\u1ea3y ra tai n\u1ea1n. […]<\/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-7789","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\/7789","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=7789"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7789\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}