The pH of a mixture of 100 ml 1M H2SO4 and 200 ml 1N NaOH at 25°C is

Question

The pH of a mixture of 100 ml 1M H2SO4 and 200 ml 1N NaOH at 25°C is (A) More than 7 (B) Less than 7 (C) Equal to 7 (D) Can’t predict

Tardigrade Admin · Accepted Answer

We know, Normality = molarity × n-factor ⇒ Normality of H 2 SO 4=1 × 2, N =2 N ∴ Number of g equivalents of H+=|N1 V1-N2 V2|=|0.1 × 2-0.2 × 1|=0 ⇒ Solution is neutral

Q. The pH of a mixture of $100 m l 1 M H_{2} S O_{4}$ and $200 m l 1 N N a O H$ at $2 5^{\circ} C$ is

More than 7

Less than 7

Equal to 7

Can’t predict

We know,
Normality $=$ molarity $\times$ n-factor
$\Rightarrow$ Normality of $H_{2} S O_{4} = 1 \times 2, N = 2 N$
$∴$ Number of $g$ equivalents of $H^{+} = ∣ N_{1} V_{1} - N_{2} V_{2} ∣ = ∣0.1 \times 2 - 0.2 \times 1∣ = 0$
$\Rightarrow$ Solution is neutral

Q. The pH of a mixture of 100ml1MH2​SO4​ and 200ml1NNaOH at 25∘C is