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Câu hỏi: Cho dãy các chất sau: phenyl fomat, glyxylvalin (Gly-Val), saccarozơ, triolein. Số chất bị thủy phân trong môi trường axit là
A. 4.
B. 2.
C. 3.
D. 1.
A. 4.
B. 2.
C. 3.
D. 1.
PTHH: $HCOO{{C}_{6}}{{H}_{5}}+{{H}_{2}}O\xrightarrow{H+}HCOOH+{{C}_{6}}{{H}_{5}}OH$
$Gly-Val+{{H}_{2}}O\xrightarrow{H+}Gly+Val$
$Saccaroz\hat{o}+{{H}_{2}}O\xrightarrow{H+}Glucoz\hat{o}+Fructoz\hat{o}$
${{\left( {{C}_{17}}{{H}_{33}}COO \right)}_{3}}{{C}_{3}}{{H}_{5}}+{{H}_{2}}O\xrightarrow{H+}3{{C}_{17}}{{H}_{33}}COOH+{{C}_{3}}{{H}_{5}}{{\left( OH \right)}_{3}}$
$Gly-Val+{{H}_{2}}O\xrightarrow{H+}Gly+Val$
$Saccaroz\hat{o}+{{H}_{2}}O\xrightarrow{H+}Glucoz\hat{o}+Fructoz\hat{o}$
${{\left( {{C}_{17}}{{H}_{33}}COO \right)}_{3}}{{C}_{3}}{{H}_{5}}+{{H}_{2}}O\xrightarrow{H+}3{{C}_{17}}{{H}_{33}}COOH+{{C}_{3}}{{H}_{5}}{{\left( OH \right)}_{3}}$
Đáp án A.