First slide

Concentration methods

Question

500 ml of 0.2 M tribasic acid completely neutralizes ‘X’ ml of 0.4 M diacidic base. The value of ‘X’ is

Moderate

A

166.66
B

250
C

375
D

133.33

Solution

$V_{a} N_{a} = V_{b} N_{b} 500 (0.2) 3 = V_{2} (0.4) 2; V_{2} = 375 ml;$

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