Which mixture gives buffer... | JEE Main 2026 22 Jan Shift 2

JEE MAIN 2026

22-01-2026 S2

Question

Which of the following mixture gives a buffer solution with $\mathrm{pH}=9.25$ ? Given: $\mathrm{pK}_{\mathrm{b}}\left(\mathrm{NH}_4 \mathrm{OH}\right)=4.75$

Select the correct option:

$0.4 \mathrm{M} \mathrm{NH}_4 \mathrm{OH}(1 \mathrm{~L})+0.1 \mathrm{M} \mathrm{HCl}(1 \mathrm{~L})$

$0.5 \mathrm{M} \mathrm{NH}_4 \mathrm{OH}(0.2 \mathrm{~L})+0.2 \mathrm{M} \mathrm{HCl}(0.5 \mathrm{~L})$

$0.2 \mathrm{M} \mathrm{NH}_4 \mathrm{OH}(0.4 \mathrm{~L})+0.1 \mathrm{M} \mathrm{HCl}(1 \mathrm{~L})$

$0.2 \mathrm{MNH}_4 \mathrm{OH}(0.5 \mathrm{~L})+0.1 \mathrm{MHCl}(0.5 \mathrm{~L})$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Chemistry

Medium

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