AIPMT 2009 | Thermodynamics Question 45 | Chemistry

AIPMT 2009

MCQ (Single Correct Answer)

-1

The values of $$\Delta $$H and $$\Delta $$S for the reaction,

C_(graphite) + CO₂(g) $$ \to $$ 2CO_(g)

are 170 kJ and 170 J K^$$-$$1, respectively. This reaction will be spontaneous at

910 K

1110 K

510 K

710 K

AIPMT 2008

MCQ (Single Correct Answer)

-1

For the gas phase reaction,

PCl_5(g) $$\rightleftharpoons$$ PCl_3(g) + Cl_2(g)

which of the following conditions are correct ?

$$\Delta $$H < 0 and $$\Delta $$S < 0

$$\Delta $$H > 0 and $$\Delta $$S < 0

$$\Delta $$H = 0 and $$\Delta $$S < 0

$$\Delta $$H > 0 and $$\Delta $$S > 0

AIPMT 2008

MCQ (Single Correct Answer)

-1

Bond dissociation enthalpy of H₂, Cl₂ and HCl are 434, 242 and 431 kJ mol^$$-$$1 respectively. Enthalpy of formation of HCl is

$$-$$ 93 kJ mol^$$-$$1

245 kJ mol^$$-$$1

93 kJ mol^$$-$$1

$$-$$ 245 kJ mol^$$-$$1

AIPMT 2008

MCQ (Single Correct Answer)

-1

Which of the following are not state functions ?
(I) q + w (II) q
(III) w (IV) H $$-$$ TS

(I), (II) and (III)

(II) and (III)

(I) and (IV)

(II), (III) and (IV)

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