1
NEET 2020 Phase 1
+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 $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(2 \times {10^{13}})$$
2
NEET 2020 Phase 1
+4
-1
For the reaction, 2Cl(g) $$\to$$ Cl2(g), the correct option is :
A
$${\Delta _r}H > 0$$ and $${\Delta _r}S < 0$$
B
$${\Delta _r}H < 0$$ and $${\Delta _r}S > 0$$
C
$${\Delta _r}H < 0$$ and $${\Delta _r}S < 0$$
D
$${\Delta _r}H > 0$$ and $${\Delta _r}S > 0$$
3
NEET 2020 Phase 1
+4
-1
A
q = 0, $$\Delta$$ T < 0 and w > 0
B
q < 0, $$\Delta$$ T = 0 and w = 0
C
q > 0, $$\Delta$$ T > 0 and w > 0
D
q = 0, $$\Delta$$ T = 0 and w = 0
4
NEET 2019
+4
-1
In which case change in entropy is negative?
A
Sublimation of solid to gas
B
2H(g) $$\to$$ H2(g)
C
Evaporation of water
D
Expansion of a gas at temperature
EXAM MAP
Medical
NEET