Câu hỏi:
Cho các chất sau: (KHC{O_3},{rm{ }}NaClO,{rm{ }}C{H_3}OH,{rm{ }}Mg,{rm{ }}Cu{left( {OH} right)_2},{rm{ }}dd{rm{ }}B{r_2},{rm{ }}CaC{O_3},{rm{ }}{C_2}{H_2}.) Số chất phản ứng axit axetic là:
Lời giải tham khảo:
Đáp án đúng: B
(begin{array}{*{20}{l}} {C{H_3}COOH{rm{ }} + {rm{ }}KHC{O_3}; to {rm{ }}{H_2}O{rm{ }} + {rm{ }}C{O_2}; + {rm{ }}C{H_3}COOK}\ {C{H_3}COOH{rm{ }} + {rm{ }}NaClO{rm{ }} to {rm{ }}C{H_3}COONa{rm{ }} + {rm{ }}HClO}\ {C{H_3}COOH{rm{ }} + {rm{ }}C{H_3}OH{rm{ }} mathbin{lower.3exhbox{$buildreltextstylerightarrowover {smash{leftarrow}vphantom{_{vbox to.5ex{vss}}}}$}} {rm{ }}{H_2}O{rm{ }} + {rm{ }}C{H_3}COOC{H_3}}\ {2C{H_3}COOH{rm{ }} + {rm{ }}Mg{rm{ }} to {rm{ }}{H_2}; + {rm{ }}Mg{{left( {C{H_3}COO} right)}_2}}\ {2C{H_3}COOH{rm{ }} + {rm{ }}Cu{{left( {OH} right)}_2}; to {rm{ }}2{H_2}O{rm{ }} + {rm{ }}{{left( {C{H_3}COO} right)}_2}Cu}\ {CaC{O_3}; + {rm{ }}2C{H_3}COOH{rm{ }} to {rm{ }}{{left( {C{H_3}COO} right)}_2}Ca{rm{ }} + {rm{ }}{H_2}O{rm{ }} + {rm{ }}C{O_2}}\ {{C_2}{H_2}; + {rm{ }}C{H_3}COOH{rm{ }} to {rm{ }}C{H_3}COOCHC{H_2}} end{array})
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