25M. CTCTCỤA (X) LAØ
1,25M. CTCTcụa (X) laø:
A. CH
3
-CH
2
-COOH
B. HCOOH C. CH
2
=CH-COOH D. CH
3
COOH
Cađu 473. 2,64 gam hoên hôïp HCOOH, CH
3
COOH, phenol taùc dúng ñụ V ml dung dòch NaOH 1M thu
1,25M. CTCTcụa (X) laø:
A. CH
3
-CH
2
-COOH
B. HCOOH C. CH
2
=CH-COOH D. CH
3
COOH
Cađu 473. 2,64 gam hoên hôïp HCOOH, CH
3
COOH, phenol taùc dúng ñụ V ml dung dòch NaOH 1M thu