00. Thermodynamics Terms
Thermodynamics

272344 If a chemical reaction is known to be nonspontaneous at $298 \mathrm{~K}$ but spontaneous at $350 \mathrm{k}$, then which among the following conditions is true for the reaction?

1 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=-\mathrm{ve}, \Delta \mathrm{S}=+$ ve
2 $\Delta \mathrm{G}=+$ ve, $\Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=+$ ve
3 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=$ +ve
4 $\Delta \mathrm{G}=+\mathrm{ve}, \Delta \mathrm{H}=+\mathrm{ve}, \Delta \mathrm{S}=-\mathrm{ve}$
Thermodynamics

272348 The temperature of one mole of an ideal gas increases from $298 \mathrm{~K}$ when it absorbs $200 \mathrm{~J}$ of heat at constant volume. The change in the internal energy of the gas is

1 $200 \mathrm{~J}$
2 $140 \mathrm{~J}$
3 $-200 \mathrm{~J}$
4 $-140 \mathrm{~J}$
Thermodynamics

272351 In conversion of lime-stone to lime, $\mathrm{CaCO}_3$ (s) $\rightarrow \mathrm{CaO}$ (s) $+\mathrm{CO}_2$ (g) the values of $\Delta \mathrm{H}^{\circ}$ and $\Delta \mathrm{S}^{\circ}$ do not change with temperature, temperature are $+179.1 \mathrm{kJmol}^{-1}$ and $160.2 \mathrm{~J} / \mathrm{K}$ respectively at $298 \mathrm{~K}$ and 1 bar. Assuming that $\Delta H^0$ and $\Delta \mathrm{S}^0$ above which conversion of limestone at lime will be spontaneous is

1 $1118 \mathrm{~K}$
2 $1008 \mathrm{~K}$
3 $1200 \mathrm{~K}$
4 $845 \mathrm{~K}$
Thermodynamics

272352 One mole of a non-ideal gas undergoes a change of state $(2.0 \mathrm{~atm}, 3.0 \mathrm{~L}, 95 \mathrm{~K}) \rightarrow(4.0$ atm, $5.0 \mathrm{~L}, 245 \mathrm{~K}$ ) with a change in internal energy, $\Delta U=30.0 \mathrm{~L}$ atm. The change in enthalpy $\Delta H$ of the process in $L$ atm is.

1 40.0
2 42.3
3 44.0
4 Not defined because pressure is not constant
Thermodynamics

272353 1 mole of a diatomic gas is heated through isochoric process from $300 \mathrm{~K}$ to $500 \mathrm{~K}$. The entropy is:

1 10.61
2 38.26
3 20.05
4 30
Thermodynamics

272344 If a chemical reaction is known to be nonspontaneous at $298 \mathrm{~K}$ but spontaneous at $350 \mathrm{k}$, then which among the following conditions is true for the reaction?

1 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=-\mathrm{ve}, \Delta \mathrm{S}=+$ ve
2 $\Delta \mathrm{G}=+$ ve, $\Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=+$ ve
3 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=$ +ve
4 $\Delta \mathrm{G}=+\mathrm{ve}, \Delta \mathrm{H}=+\mathrm{ve}, \Delta \mathrm{S}=-\mathrm{ve}$
Thermodynamics

272348 The temperature of one mole of an ideal gas increases from $298 \mathrm{~K}$ when it absorbs $200 \mathrm{~J}$ of heat at constant volume. The change in the internal energy of the gas is

1 $200 \mathrm{~J}$
2 $140 \mathrm{~J}$
3 $-200 \mathrm{~J}$
4 $-140 \mathrm{~J}$
Thermodynamics

272351 In conversion of lime-stone to lime, $\mathrm{CaCO}_3$ (s) $\rightarrow \mathrm{CaO}$ (s) $+\mathrm{CO}_2$ (g) the values of $\Delta \mathrm{H}^{\circ}$ and $\Delta \mathrm{S}^{\circ}$ do not change with temperature, temperature are $+179.1 \mathrm{kJmol}^{-1}$ and $160.2 \mathrm{~J} / \mathrm{K}$ respectively at $298 \mathrm{~K}$ and 1 bar. Assuming that $\Delta H^0$ and $\Delta \mathrm{S}^0$ above which conversion of limestone at lime will be spontaneous is

1 $1118 \mathrm{~K}$
2 $1008 \mathrm{~K}$
3 $1200 \mathrm{~K}$
4 $845 \mathrm{~K}$
Thermodynamics

272352 One mole of a non-ideal gas undergoes a change of state $(2.0 \mathrm{~atm}, 3.0 \mathrm{~L}, 95 \mathrm{~K}) \rightarrow(4.0$ atm, $5.0 \mathrm{~L}, 245 \mathrm{~K}$ ) with a change in internal energy, $\Delta U=30.0 \mathrm{~L}$ atm. The change in enthalpy $\Delta H$ of the process in $L$ atm is.

1 40.0
2 42.3
3 44.0
4 Not defined because pressure is not constant
Thermodynamics

272353 1 mole of a diatomic gas is heated through isochoric process from $300 \mathrm{~K}$ to $500 \mathrm{~K}$. The entropy is:

1 10.61
2 38.26
3 20.05
4 30
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Thermodynamics

272344 If a chemical reaction is known to be nonspontaneous at $298 \mathrm{~K}$ but spontaneous at $350 \mathrm{k}$, then which among the following conditions is true for the reaction?

1 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=-\mathrm{ve}, \Delta \mathrm{S}=+$ ve
2 $\Delta \mathrm{G}=+$ ve, $\Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=+$ ve
3 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=$ +ve
4 $\Delta \mathrm{G}=+\mathrm{ve}, \Delta \mathrm{H}=+\mathrm{ve}, \Delta \mathrm{S}=-\mathrm{ve}$
Thermodynamics

272348 The temperature of one mole of an ideal gas increases from $298 \mathrm{~K}$ when it absorbs $200 \mathrm{~J}$ of heat at constant volume. The change in the internal energy of the gas is

1 $200 \mathrm{~J}$
2 $140 \mathrm{~J}$
3 $-200 \mathrm{~J}$
4 $-140 \mathrm{~J}$
Thermodynamics

272351 In conversion of lime-stone to lime, $\mathrm{CaCO}_3$ (s) $\rightarrow \mathrm{CaO}$ (s) $+\mathrm{CO}_2$ (g) the values of $\Delta \mathrm{H}^{\circ}$ and $\Delta \mathrm{S}^{\circ}$ do not change with temperature, temperature are $+179.1 \mathrm{kJmol}^{-1}$ and $160.2 \mathrm{~J} / \mathrm{K}$ respectively at $298 \mathrm{~K}$ and 1 bar. Assuming that $\Delta H^0$ and $\Delta \mathrm{S}^0$ above which conversion of limestone at lime will be spontaneous is

1 $1118 \mathrm{~K}$
2 $1008 \mathrm{~K}$
3 $1200 \mathrm{~K}$
4 $845 \mathrm{~K}$
Thermodynamics

272352 One mole of a non-ideal gas undergoes a change of state $(2.0 \mathrm{~atm}, 3.0 \mathrm{~L}, 95 \mathrm{~K}) \rightarrow(4.0$ atm, $5.0 \mathrm{~L}, 245 \mathrm{~K}$ ) with a change in internal energy, $\Delta U=30.0 \mathrm{~L}$ atm. The change in enthalpy $\Delta H$ of the process in $L$ atm is.

1 40.0
2 42.3
3 44.0
4 Not defined because pressure is not constant
Thermodynamics

272353 1 mole of a diatomic gas is heated through isochoric process from $300 \mathrm{~K}$ to $500 \mathrm{~K}$. The entropy is:

1 10.61
2 38.26
3 20.05
4 30
Thermodynamics

272344 If a chemical reaction is known to be nonspontaneous at $298 \mathrm{~K}$ but spontaneous at $350 \mathrm{k}$, then which among the following conditions is true for the reaction?

1 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=-\mathrm{ve}, \Delta \mathrm{S}=+$ ve
2 $\Delta \mathrm{G}=+$ ve, $\Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=+$ ve
3 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=$ +ve
4 $\Delta \mathrm{G}=+\mathrm{ve}, \Delta \mathrm{H}=+\mathrm{ve}, \Delta \mathrm{S}=-\mathrm{ve}$
Thermodynamics

272348 The temperature of one mole of an ideal gas increases from $298 \mathrm{~K}$ when it absorbs $200 \mathrm{~J}$ of heat at constant volume. The change in the internal energy of the gas is

1 $200 \mathrm{~J}$
2 $140 \mathrm{~J}$
3 $-200 \mathrm{~J}$
4 $-140 \mathrm{~J}$
Thermodynamics

272351 In conversion of lime-stone to lime, $\mathrm{CaCO}_3$ (s) $\rightarrow \mathrm{CaO}$ (s) $+\mathrm{CO}_2$ (g) the values of $\Delta \mathrm{H}^{\circ}$ and $\Delta \mathrm{S}^{\circ}$ do not change with temperature, temperature are $+179.1 \mathrm{kJmol}^{-1}$ and $160.2 \mathrm{~J} / \mathrm{K}$ respectively at $298 \mathrm{~K}$ and 1 bar. Assuming that $\Delta H^0$ and $\Delta \mathrm{S}^0$ above which conversion of limestone at lime will be spontaneous is

1 $1118 \mathrm{~K}$
2 $1008 \mathrm{~K}$
3 $1200 \mathrm{~K}$
4 $845 \mathrm{~K}$
Thermodynamics

272352 One mole of a non-ideal gas undergoes a change of state $(2.0 \mathrm{~atm}, 3.0 \mathrm{~L}, 95 \mathrm{~K}) \rightarrow(4.0$ atm, $5.0 \mathrm{~L}, 245 \mathrm{~K}$ ) with a change in internal energy, $\Delta U=30.0 \mathrm{~L}$ atm. The change in enthalpy $\Delta H$ of the process in $L$ atm is.

1 40.0
2 42.3
3 44.0
4 Not defined because pressure is not constant
Thermodynamics

272353 1 mole of a diatomic gas is heated through isochoric process from $300 \mathrm{~K}$ to $500 \mathrm{~K}$. The entropy is:

1 10.61
2 38.26
3 20.05
4 30
Thermodynamics

272344 If a chemical reaction is known to be nonspontaneous at $298 \mathrm{~K}$ but spontaneous at $350 \mathrm{k}$, then which among the following conditions is true for the reaction?

1 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=-\mathrm{ve}, \Delta \mathrm{S}=+$ ve
2 $\Delta \mathrm{G}=+$ ve, $\Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=+$ ve
3 $\Delta \mathrm{G}=-\mathrm{ve}, \Delta \mathrm{H}=+$ ve, $\Delta \mathrm{S}=$ +ve
4 $\Delta \mathrm{G}=+\mathrm{ve}, \Delta \mathrm{H}=+\mathrm{ve}, \Delta \mathrm{S}=-\mathrm{ve}$
Thermodynamics

272348 The temperature of one mole of an ideal gas increases from $298 \mathrm{~K}$ when it absorbs $200 \mathrm{~J}$ of heat at constant volume. The change in the internal energy of the gas is

1 $200 \mathrm{~J}$
2 $140 \mathrm{~J}$
3 $-200 \mathrm{~J}$
4 $-140 \mathrm{~J}$
Thermodynamics

272351 In conversion of lime-stone to lime, $\mathrm{CaCO}_3$ (s) $\rightarrow \mathrm{CaO}$ (s) $+\mathrm{CO}_2$ (g) the values of $\Delta \mathrm{H}^{\circ}$ and $\Delta \mathrm{S}^{\circ}$ do not change with temperature, temperature are $+179.1 \mathrm{kJmol}^{-1}$ and $160.2 \mathrm{~J} / \mathrm{K}$ respectively at $298 \mathrm{~K}$ and 1 bar. Assuming that $\Delta H^0$ and $\Delta \mathrm{S}^0$ above which conversion of limestone at lime will be spontaneous is

1 $1118 \mathrm{~K}$
2 $1008 \mathrm{~K}$
3 $1200 \mathrm{~K}$
4 $845 \mathrm{~K}$
Thermodynamics

272352 One mole of a non-ideal gas undergoes a change of state $(2.0 \mathrm{~atm}, 3.0 \mathrm{~L}, 95 \mathrm{~K}) \rightarrow(4.0$ atm, $5.0 \mathrm{~L}, 245 \mathrm{~K}$ ) with a change in internal energy, $\Delta U=30.0 \mathrm{~L}$ atm. The change in enthalpy $\Delta H$ of the process in $L$ atm is.

1 40.0
2 42.3
3 44.0
4 Not defined because pressure is not constant
Thermodynamics

272353 1 mole of a diatomic gas is heated through isochoric process from $300 \mathrm{~K}$ to $500 \mathrm{~K}$. The entropy is:

1 10.61
2 38.26
3 20.05
4 30