First slide

Concentration methods

Question

‘X’ ml of 0.1 M Phosphorous acid completely neutralizes 200 ml of 0.4 M KOH solution. The value of ‘X’ is

Moderate

A

800
B

400
C

200
D

100

Solution

$V_{a} N_{a} = V_{b} N_{b} V (0.1) 2 = 200 (0.4) 1; V = 400 mL;$

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