PHƯƠNG PHÁP QUY ĐỔI ESTE THÔNG QUA ĐỀ THI THPTQG 2019
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( CH 2=CH-CH 2 COONa)<br />
CH 2 =CH- CH 2 - COOC 3 H 7<br />
CH 2 =CH- CH 2 - COO<br />
CH 2 =CH- CH 2 - COO<br />
C 3 H 6<br />
CH 2 =CH- CH 2 - COO<br />
CH 2 =CH- CH 2 - COO C 3 H 5<br />
CH 2 =CH- CH 2 - COO<br />
% KL H trong Y : 7,55% ch n D<br />
( Thi th Vinh 2018): a m<br />
este no, hai ch u m ch h n h p E ch a X, Y c<br />
mol O2. M gam E c c m t ancol duy<br />
nh n h p ch a mu i kali c a hai axit cacboxilic. T ng s<br />
A. 16. B. 14. C. 18. D. 12<br />
( Thi th c 2018): X, Y u hai ch X no, Y a<br />
m t C=C); Z este thu n ch c t o b i X, Y T n h p E ch a X,<br />
Y, Z (s mol c a Y g p 2 l n s mol c a Z) c 2. M E v i<br />
440 ml dung d ch NaOH 1M (v c m t ancol T duy nh n h p F g m a gam mu i A<br />
b gam mu i B (MA< MB). D T y kh ng<br />
th<br />
H2 l a : b g n nh t v i<br />
A. 3,6. B. 3,9. C. 3,8. D. 3,7.
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