AIPMT 2003 | Thermodynamics Question 64 | Chemistry

What is the entropy change (in J K^$$-$$1 mol^$$-$$1) when one mole of ice is converted into water at 0^oC? (The enthalpy change for the conversion of ice to liquid water is 6.0 kJ mol^$$-$$1 at 0^oC).

20.13

2.013

2.198

21.98

AIPMT 2003

MCQ (Single Correct Answer)

-1

The molar heat capacity of water at constant pressure, C, is 75 J K^$$-$$1 mol^$$-$$1. When 1.0 kJ of heat is supplied to 100 g of water which is free to expand, the increase in temperature of water is

1.2 K

2.4 K

4.8 K

6.6 K

AIPMT 2003

MCQ (Single Correct Answer)

-1

Formation of solution from two components can be considered as
(i) Pure solvent $$ \to $$ separated solvent molecules, $$\Delta $$H₁
(ii) Pure solute $$ \to $$ separated solute molecules, $$\Delta $$H₂
(iii) Separated solvent and solute molecules $$ \to $$ solution, $$\Delta $$H₃
Solution so formed will be ideal if

$$\Delta $$H_soln = $$\Delta $$H₁ + $$\Delta $$H₂ + $$\Delta $$H₃

$$\Delta $$H_soln = $$\Delta $$H₁ + $$\Delta $$H₂ $$-$$ $$\Delta $$H₃

$$\Delta $$H_soln = $$\Delta $$H₁ $$-$$ $$\Delta $$H₂ $$-$$ $$\Delta $$H₃

$$\Delta $$H_soln = $$\Delta $$H₃ $$-$$ $$\Delta $$H₁ $$-$$ $$\Delta $$H₂

AIPMT 2003

MCQ (Single Correct Answer)

-1

For which one of the following equations is $$\Delta $$H^o_react equal to $$\Delta $$H^o_f for the product ?

Xe_(g) + 2F_2(g) $$ \to $$ XeF_4(g)

2CO_(g) + O_2(g) $$ \to $$ 2CO_2(g)

N_2(g) + O_3(g) $$ \to $$ N₂O_3(g)

CH_4(g) + 2Cl_2(g) $$ \to $$ CH₂Cl_2(l) + 2HCl_(g)

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