 N 2A MOLHCO   3TA CÓ

Câu 41:

 n 2a mol

HCO

   

3

Ta có:

NaOH NaHCO Xn 2b mol

2

CO

V i ph n 1



BaCl

2

n

0, 06

BTNT

 b 0, 06 mol

V i ph n 2:



CaCl /t

2

0

n

0, 07

BTNT

 a 0, 02 mol

3



    

BTNT

0,16 0,08 0,12.40 4,8( )n

C

mol NaHCO m gam

áp án: B