First slide

Concentration methods

Question

100 ml of 2 M Phosphorous acid completely neutralizes ‘X’ ml of 0.5 M Magnesium hydroxide solution. The value of ‘X’ is

Moderate

A

400
B

800
C

200
D

100

Solution

$V_{a} N_{a} = V_{b} N_{b} 100 (2) 2 = V_{2} (0.5) 2; V_{2} = 400 ml;$

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