1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is [Given pKa of CH3COOH = 4.57]

A
5.57
B
3.57
C
4.57
D
2.57
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

3O2(g) $$\rightleftharpoons$$ 2O3(g)

for the above reaction at 298 K, Kc is found to be 3.0 $$\times$$ 10$$-$$59. If the concentration of O2 at equilibrium is 0.040 M then concentration of O3 in M is

A
4.38 $$\times$$ 10$$-$$32
B
1.9 $$\times$$ 10$$-$$63
C
2.4 $$\times$$ 1031
D
1.2 $$\times$$ 1021
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The pKb of dimethyl amine and pKa of acetic acid are 3.27 and 4.77 respectively at T (K). The correct option for the pH of dimethyl ammonium acetate solution is :
A
6.25
B
8.50
C
5.50
D
7.75
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Hydrolysis of sucrose is given by the following reaction.
Sucrose + H2O ⇌ Glucose + Fructose
If the equilibrium constant (Kc) is 2 $$ \times $$ 1013 at 800 K, the value of $$\Delta r{G^\Theta }$$ at the same temperature will be :
A
8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(2 \times {10^{13}})$$
B
8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(3 \times {10^{13}})$$
C
$$ - $$ 8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(4 \times {10^{13}})$$
D
-8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(2 \times {10^{13}})$$
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