First slide

Concentration methods

Question

4 litres of 2.5 M Phosphorous acid is diluted to 20 litre solution. Normality of the resultant solution is ---- N

Moderate

A

1
B

2
C

0.5
D

0.25

Solution

$V_{1} N_{1} = V_{2} N_{2}; 4 (2.5) 2 = 20 N_{2}; N_{2} = 1 N;$

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