First slide

PH of strong acids and strong bases

Question

One litre of aqueous solution of H₂SO₄ contains 4.9 g of the acid. 100 ml of this solution is taken in a 1 litre flask and diluted with water upto the mark. The P^H of the dilute solution is

Moderate

A

2.0
B

2.301
C

1.699
D

3.699

Solution

Normality of strong acid =[H⁺]= $\frac{4.9}{49} \times \frac{1000}{100} = 10^{- 2} N$
P^H = 2

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