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Q.

200 ml of 1M H₂SO₄, 300 ml 3M HCl and 100 ml of 2M HCl are mixed and made up to 1 litre. The proton concentration in the resulting solution is

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a

1.5M

b

0.75M

c

2.5M

d

1.25M

answer is B.

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Detailed Solution

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proton concentration is Normality(N).

For proton, N=Molarity.

$N = \frac{V_{1} N_{1} + V_{2} N_{2} + V_{3} N_{3}}{V} = \frac{200 (2 N) + 300 (3 N) + 100 (2 N)}{1000} = 1.5 N = 1.5 M$

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200 ml of 1M H2SO4, 300 ml 3M HCl and 100 ml of 2M HCl are mixed and made up to 1 litre. The proton concentration in the resulting solution is