1
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Number of moles of ions produced by complete dissociation of one mole of Mohr's salt in water is

A
3
B
4
C
5
D
6
2
WB JEE 2024
MCQ (Single Correct Answer)
+2
-0.5
Change Language

$$\mathrm{pH}$$ of $$10^{-8}(\mathrm{M}) \mathrm{~HCl}$$ solution is

A
8
B
greater than 7, less than 8
C
greater than 8
D
greater than 6, less than 7
3
WB JEE 2024
MCQ (Single Correct Answer)
+2
-0.5
Change Language

The specific conductance $$(\mathrm{k})$$ of $$0.02(\mathrm{M})$$ aqueous acetic acid solution at $$298 \mathrm{~K}$$ is $$1.65 \times 10^{-4} \mathrm{~S} \mathrm{~cm}^{-1}$$. The degree of dissociation of acetic acid is

$$[\lambda_{\mathrm{O}^{+}}+=349.1 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1} \text { and } \lambda_{{ }^{\circ} \mathrm{CH}_3 \mathrm{COO}^{-}}=40.9 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}]$$

A
0.021
B
0.21
C
0.012
D
0.12
4
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

At STP, the dissociation reaction of water is $$\mathrm{H_2O\rightleftharpoons H^+~(aq.)+OH^-~(aq.)}$$, and the pH of water is 7.0. The change of standard free energy ($$\Delta$$G$$^\circ$$) for the above dissociation process is given by

A
20301 cal/mol
B
19091 cal/mol
C
20096 cal/mol
D
21301 cal/mol
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