To calculate the amount of work done in joules during reversible isothermal expansion of an ideal gas, the volume must be expressed in:
1. | m3 only | 2. | dm3 only |
3. | cm3 only | 4. | All of the above |
For the conversion C(graphite) C(diamond) the is:
1. Zero
2. Positive
3. Negative
4. Unknown
The entropy change in the conversion of one mole of liquid water at 373 K to vapour at the same temperature would be: (Latent heat of vaporization of water, )
1. 105.9 JK-1mol-1
2. 107.9 JK-1mol-1
3. 108.9 JK-1mol-1
4. 109.9 JK-1mol-1
\(\underset {-10.7 \mathrm{JK}^{-1}} {\mathrm{H}_{(a q)}^{+}+\mathrm{OH^{-}}_{(a q)}} \rightarrow \underset {+70 \mathrm{JK}^{-1} \mathrm{~mol}^{-1} } {\mathrm{H}_{2} \mathrm{O}_{(l)}} ~~ \mathrm{S}^{\circ}(298 \mathrm{~K})\)
Standard entropy change for the above reaction is:
1. 60.3 JK-1 mol-1
2. 80.7 JK-1 mol-1
3. -70 JK-1 mol-1
4. +10.7 JK-1 mol-1
Hydrolysis of sucrose is given by the following reaction
Sucrose + H2O Glucose + Fructose
If the equilibrium constant (Kc) is 21013 at 300 K, the value of at the same temperature will be:
1. 8.314 J mol–1 K–1300 Kln (21013)
2. 8.314 J mol–1 K–1300 Kln (31013)
3. –8.314 J mol–1 K–1300 Kln (41013)
4. –8.314 J mol–1 K–1300 Kln (21013)
For the reaction, 2Cl(g) Cl2(g), the correct option is:
1.
2.
3.
4.
What is the value of ∆H for the reaction 2Al + Cr₂O₃ → 2Cr + Al₂O₃, knowing that the enthalpies of
formation of Al₂O₃ and Cr₂O₃ are –1596 kJ and –1134 kJ, respectively?
1. | –1365 kJ | 2. | 2730 kJ |
3. | –2730 kJ | 4. | –462 kJ |
Which of the following conditions will always lead to a non-spontaneous change?
1. Positive and positive
2. Negative and negative
3. Positive and negative
4. Negative and positive
Plants and living beings are examples of:
1. Isolated system
2. Adiabatic system
3. Open system
4. Closed system
Identify the false statement among the following.
1. | Temperature is a state function. |
2. | Work is a state function. |
3. | Change in the state is completely defined when the initial and final states are specified. |
4. | Work appears at the boundary of the system. |