B\u00e0i 1 (trang 38 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang : Trong ph\u00e2n t\u1eed disaccarit, s\u1ed1 th\u1ee9 t\u1ef1 c\u1ee7a C \u1edf m\u1ed7i g\u1ed1c monosaccarit<\/strong><\/p>\n

A. \u0110\u01b0\u1ee3c ghi theo chi\u1ec1u kim \u0111\u1ed3ng h\u1ed3<\/p>\n

B. \u0110\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u t\u1eeb nh\u00f3m \u2013CH_{2<\/sub>OH<\/p>\n}

C. \u0110\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u t\u1eeb C li\u00ean k\u1ebft v\u1edbi c\u1ea7u O n\u1ed1i li\u1ec1n 2 g\u1ed1c monosaccarit<\/p>\n

D. \u0110\u01b0\u1ee3c ghi nh\u01b0 \u1edf m\u1ed7i monosaccarit<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e1p \u00e1n D<\/p>\n

B\u00e0i 2 (trang 38 sgk H\u00f3a 12 n\u00e2ng cao):\u00a02. \u0110\u1ec3 ph\u00e2n bi\u1ec7t c\u00e1c dung d\u1ecbch h\u00f3a ch\u1ea5t ri\u00eang bi\u1ec7t l\u00e0 saccarozo, mantozo, etanol v\u00e0 fomadehit ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 d\u00f9ng m\u1ed9t trong c\u00e1c h\u00f3a ch\u1ea5t n\u00e0o sau \u0111\u00e2y?<\/strong><\/p>\n

A. Cu(OH)_{2<\/sub>\/OH-<\/p>\n}

B. AgNO_{3<\/sub>\/NH3<\/sub><\/p>\n}

C. H_{2<\/sub>\/Ni<\/p>\n}

D. V\u00f4i s\u1eefa<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e1p \u00e1n A<\/p>\n

B\u00e0i 3 (trang 38 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0a) H\u00e3y vi\u1ebft c\u00f4ng th\u1ee9c c\u1ea5u tr\u00fac c\u1ee7a saccarozo (c\u00f3 ghi s\u1ed1 th\u1ee9 t\u1ef1 c\u1ee7a C) v\u00e0 n\u00f3i r\u00f5 c\u00e1ch h\u00ecnh th\u00e0nh n\u00f3 t\u1eeb ph\u00e2n t\u1eed glucozo v\u00e0 ph\u00e2n t\u1eed fructozo. V\u00ec sao saccarozo kh\u00f4ng c\u00f3 t\u00ednh kh\u1eed?<\/strong><\/p>\n

b) H\u00e3y vi\u1ebft c\u00f4ng th\u1ee9c c\u1ea5u tr\u00fac c\u1ee7a mantozo (c\u00f3 ghi s\u1ed1 th\u1ee9 t\u1ef1 c\u1ee7a C) v\u00e0 n\u00f3i r\u00f5 c\u00e1ch h\u00ecnh th\u00e0nh n\u00f3 t\u1eeb 2 ph\u00e2n t\u1eed glucozo. V\u00ec sao mantozo c\u00f3 t\u00ednh kh\u1eed<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

a. C\u00f4ng th\u1ee9c c\u1ea5u t\u1ea1o c\u1ee7a saccarozo<\/p>\n

<\/p>\n

B\u00e0i 4 (trang 38 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng x\u1ea3y ra (n\u1ebfu c\u00f3) gi\u1eefa saccarozo v\u1edbi Cu(OH)_{2<\/sub>\u00a0( \u1edf nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng v\u00e0 \u0111un n\u00f3ng) v\u1edbi dung d\u1ecbch AgNO3<\/sub>\u00a0trong amoniac (\u0111un nh\u1eb9) v\u00e0 v\u1edbi dung d\u1ecbch H2<\/sub>SO4<\/sub>\u00a0(lo\u00e3ng \u0111un nh\u1eb9)<\/strong><\/p>\n}

C\u0169ng c\u00e2u h\u1ecfi nh\u01b0 v\u1eady nh\u01b0ng thay saccarozo b\u1eb1ng mantozo<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

<\/a><\/p>\n

B\u00e0i 5 (trang 39 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Tr\u00ecnh b\u00e0y ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n bi\u1ec7t c\u00e1c dung d\u1ecbch h\u00f3a ch\u1ea5t trong m\u1ed7i d\u00e3y sau b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc<\/strong><\/p>\n

a. saccarozo, glucozo, glixerol<\/strong><\/p>\n

b. saccarozo, mantozo v\u00e0 andehit<\/strong><\/p>\n

c. saccarozo, mantozo, glixerol v\u00e0 andehit axetic<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

a.-Cho c\u00e1c ch\u1ea5t th\u1ef1c hi\u1ec7n ph\u1ea3n \u1ee9ng tr\u00e1ng b\u1ea1c nh\u1eadn ra glucozo do t\u1ea1o k\u1ebft t\u1ee7a Ag.<\/p>\n

<\/p>\n

-Hai ch\u1ea5t c\u00f2n l\u1ea1i cho t\u00e1c d\u1ee5ng v\u1edbi dung d\u1ecbch s\u1eefa v\u00f4i, n\u1ebfu ph\u1ea3n \u1ee9ng x\u1ea3y ra t\u1ea1o th\u00e0nh dung d\u1ecbch \u0111\u1ed3ng nh\u1ea5t th\u00ec \u0111\u00f3 l\u00e0 saccarozo, ch\u1ea5t kh\u00f4ng ph\u1ea3n \u1ee9ng l\u00e0 glixerol.<\/p>\n

b. Cho Cu(OH)_{2<\/sub>\u00a0v\u00e0o 3 dung d\u1ecbch r\u1ed3i \u0111un n\u00f3ng.<\/p>\n}

– Nh\u1eadn ra saccarozo v\u00ec t\u1ea1o ra dung d\u1ecbch m\u00e0u xanh lam<\/p>\n

2C_{12<\/sub>H22<\/sub>O11<\/sub>\u00a0+ Cu(OH)2<\/sub>\u00a0\u2192 (C12<\/sub>H21<\/sub>O11<\/sub>)2<\/sub>Cu + 2H2<\/sub>O<\/p>\n}

– Nh\u1eadn ra mantozo do l\u00fac \u0111\u1ea7u t\u1ea1o dung d\u1ecbch m\u00e0u xanh lam, khi \u0111un n\u00f3ng xu\u1ea5t hi\u1ec7n k\u1ebft t\u1ee7a \u0111\u1ecf g\u1ea1ch<\/p>\n

2C_{12<\/sub>H22<\/sub>O11<\/sub>\u00a0+ Cu(OH)2<\/sub>\u00a0(t^{o<\/sup>\u00a0th\u01b0\u1eddng ) \u2192 (C12<\/sub>H21<\/sub>O11<\/sub>)2<\/sub>Cu + 2H2<\/sub>O<\/p>\n}}

C_{11<\/sub>H21<\/sub>O10<\/sub>CH=O + 2Cu(OH)2<\/sub>\u00a0(t^{o<\/sup>)\u2192 C12<\/sub>H21<\/sub>O10<\/sub>-COOH + 2H2<\/sub>O + Cu2<\/sub>O (k\u1ebft t\u1ee7a)<\/p>\n}}

– Nh\u1eadn ra andehit axetic v\u00ec t\u1ea1o k\u1ebft t\u1ee7a \u0111\u1ecf g\u1ea1ch<\/p>\n

CH_{3<\/sub>CHO + 2Cu(OH)2<\/sub>\u00a0(t^{o<\/sup>)\u2192 CH3<\/sub>COOH + 2H2<\/sub>O + Cu2<\/sub>O (k\u1ebft t\u1ee7a)<\/p>\n}}

B\u00e0i 6 (trang 39 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Th\u1ee7y ph\u00e2n ho\u00e0n to\u00e0n 34,2 gam saccarozo sau \u0111\u00f3 ti\u1ebfn h\u00e0nh ph\u1ea3n \u1ee9ng tr\u00e1ng b\u1ea1c v\u1edbi dung d\u1ecbch thu \u0111\u01b0\u1ee3c. T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng Ag k\u1ebft t\u1ee7a<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

n_{saccarozo<\/sub>\u00a0= 34,2:342 = 0,1 (mol)<\/p>\n}

C_{12<\/sub>H22<\/sub>O11<\/sub>\u00a0+ H2<\/sub>O (H+ ) \u2192 C6<\/sub>H12<\/sub>O6<\/sub>+ C6<\/sub>H12<\/sub>O6<\/sub><\/p>\n}

CH_{2<\/sub>OH-[CHOH]4<\/sub>CHO+ 2[Ag(NH3<\/sub>)2<\/sub>]OH\u00a0^{(to)<\/sup>\u00a0\u2192 CH2<\/sub>OH-(CHOH)4<\/sub>-COONH4<\/sub>\u00a0+ 3NH3<\/sub>+ 2H2<\/sub>O + 2Ag (k\u1ebft t\u1ee7a)<\/p>\n}}

S\u1ed1 mol b\u1ea1c n_{Ag<\/sub>\u00a0= 2nglucozo<\/sub>\u00a0= 2nsaccarozo<\/sub>\u00a0= 0,2 mol<\/p>\n}

=> Kh\u1ed1i l\u01b0\u1ee3ng b\u1ea1c l\u00e0 : 0,2.108 = 21,6 (gam)<\/p>\n","protected":false},"excerpt":{"rendered":"

B\u00e0i 1 (trang 38 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang : Trong ph\u00e2n t\u1eed disaccarit, s\u1ed1 th\u1ee9 t\u1ef1 c\u1ee7a C \u1edf m\u1ed7i g\u1ed1c monosaccarit A. \u0110\u01b0\u1ee3c ghi theo chi\u1ec1u kim \u0111\u1ed3ng h\u1ed3 B. \u0110\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u t\u1eeb nh\u00f3m \u2013CH2OH C. \u0110\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u t\u1eeb C li\u00ean k\u1ebft v\u1edbi c\u1ea7u O n\u1ed1i li\u1ec1n 2 […]<\/p>\n","protected":false},"author":3,"featured_media":25446,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1306],"tags":[1436,1435],"yoast_head":"\n