First slide

Concentration methods

Question

1 litre of 5 M Phosphorous acid is diluted to 0.25 M solution. Final volume of the solution is ------- litres

Moderate

A

25
B

20
C

15
D

40

Solution

$V_{1} M_{1} = V_{2} M_{2}; 1 (5) = V_{2} (0.25); V_{2} = 20 litres;$

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