NG ĐÀI T VNG ĐÀI T V

Câu 124 :

CH

3

– COOH : 4 ph n ng

  

CH COOH Na CH COONa H

3

3

2

CH COOH NaOH CH COONa H O

   

CH COOH NaHCO CH COONa CO H O

3

3

3

2

2

 

2CH COOH Cu(OH) CH COO Cu 2H O

3

2

3

2

2

HCOO – CH

3

: 1 ph n ng

HCOOCH  NaOH  HCOONa  CH OH

3

3

áp án : A