200mL of 0.01M HCl is mixed|IONIC EQUILIBRIUM|JEE-Main 2022

JEE MAIN 2022

29-07-2022 S2

Question

200 mL of 0.01 M HCl is mixed with 400 mL of $0.01 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$. The pH of the mixture is $\_\_\_\_$ .

Select the correct option:

1.14

1.78

2.34

3.02

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$$ \begin{aligned} \mathrm{HCl}+\mathrm{H}_2 \mathrm{SO}_4 & \\ {\left[\mathrm{H}^{+}\right] } & =\frac{(0.01 \times 200)+(0.01 \times 2 \times 400)}{600} \\ & =\frac{2+8}{600}=\frac{10}{600}=\frac{1}{60} \end{aligned} $$ $$ \mathrm{pH}=-\log \left[\frac{1}{60}\right]=1.78 $$

Question Tags

JEE Main

Chemistry

Easy

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