Thermodynamics Test

Result

Thermodynamics Test - 37

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Consider the following reactions at 1100°C
(I) 2C + O₂ → 2CO, ∆G° = - 460 kJ mol^-1
(II) 2Zn + O₂ → 2 ZnO, ∆G° = - 360 kJ mol^-1
Based on these, select correct alternate.

A
Zinc can be oxidised by CO

B
Zinc oxide can be reduced by carbon

C
Both are correct

D
None of the above is correct

Solution
Question 2
4 / -1

For which reaction change of entropy will be positive ?

A
H₂ (g) + I₂ (g) ⇌ 2HI (g)

B
HCl (g) + NH₃ (g) ⇌ NH₄Cl (s)

C
NH₄ NO₃ (s) ⇌ N₂O (g) + 2H₂O (g)

D
MgO (s) + H₂ (g) ⇌ Mg (s) + H₂O (l)
Question 3
4 / -1

The value of log K_c for a reaction
A ⇌ B is (Given, ∆_r H° 298 K = - 54.07 kJ mol^-1 , ∆_r S ° 298 K =10 JK^-1 mol^-1 and R = 8.314 JK^-1 mol^-1 2.303 × 8.314 × 298 = 5705)

A
5

B
10

C
95

D
100
Question 4
4 / -1

Enthalpy is equal to

A

B

C

D
Question 5
4 / -1

In an irreversible process taking place at constant T and p and in which only pressure-volume work is being done, the change in Gibbs free energy (dG) and change in entropy (dS ), satisfy the criteria.

A
(dS)_{V ,E} < 0, (dG)_{T ,p} < 0

B
(dS)_{V ,E} > 0, (dG)_{T ,p} < 0

C
(dS)_{V ,E} = 0, (dG)_{T ,p} = 0

D
(dS)_{V ,E} = 0, (dG)_{T ,p} > 0
Question 6
4 / -1

For the reaction at 298 K
A(g) + B(g) ⇌ C(g) + D(g)
∆H° = - 29.8 kcal , ∆S° = - 0.100 kcal K^-1
What is the value of ∆G° ?

A
1

B
0

C
2

D
4
Question 7
4 / -1

The direct conversion of A to B is difficult, hence it is carried out by the following shown path

A
+ 100 eu

B
+ 60 eu

C
- 100 eu

D
- 60 eu

Solution
Question 8
4 / -1

The internal energy of one mole of a monoatomic gas is

A

B

C

D

Solution
Question 9
4 / -1

The correct relationship between ∆H and ∆E for an ideal gas at constant temperature is

A
∆H = ∆E – P∆V

B
∆H = ∆E + P∆V

C
∆H = ∆E + ∆P. ∆V

D
∆H = E + P∆V
Question 10
4 / -1

You are given the following two reactions:
(i)CH₄(g) + 20₂(g) → CO₂ (g) + 2H₂O(g), ∆H = - 890.4 kJ.
(ii)2HgO(s) → 2Hg(l) + O₂(g) – 181.6 kJ
Which one of the following statements is correct

A
Both reactions are exothermic

B
Both reactions are endothermic

C
Reaction (i) is endothermic and (ii) is exothermic

D
Reaction (i) is exothermic and (ii) is endothermic