00. Thermodynamics Terms
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Thermodynamics

272338 What is the value of internal energy change $(\Delta E)$ at $27^{\circ} \mathrm{C}$ of a gaseous reaction $2 \mathrm{~A}_2(\mathrm{~g})+$ $5^2 \mathrm{~B}_2(\mathrm{~g}) \rightarrow 2 \mathrm{~A}_2 \mathrm{~B}_5(\mathrm{~g})$ (whose heat change at constant pressure is $-50700 \mathrm{~J})$ ? $\left[\mathbf{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\right]$

1 $-50700 \mathrm{~J}$
2 $-63171 \mathrm{~J}$
3 $-38229 \mathrm{~J}$
4 $+38229 \mathrm{~J}$
SCRA - 2009
Thermodynamics

272340 Given $\Delta \mathrm{H}_{\mathrm{f}}$ ofor $\mathrm{CO}_2(\mathrm{~g}), \mathrm{CO}(\mathrm{g})$ and $\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ are $-393.5,-110.5$ and $-241.8 \quad \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. The $\Delta \mathrm{H}_{\mathrm{f}}$. [in $\mathrm{kJ} \mathrm{mol}^{-1}$ ] for the reaction
$\mathrm{CO}_2(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ is

1 524.1
2 -262.5
3 -41.7
4 41.2
TS EAMCET-2017
Thermodynamics

272341 Calculate $\Delta \mathbf{H}^{\circ}$ for the reaction, $\mathrm{Na}_2 \mathrm{O}(\mathrm{s})+\mathrm{SO}_3(\mathrm{~g}) \rightarrow \mathrm{Na}_2 \mathrm{SO}_4(\mathrm{~g})$
Given the following:

1 $+823 \mathrm{~kJ}$
2 $-581 \mathrm{~kJ}$
3 $-435 \mathrm{~kJ}$
4 $+531 \mathrm{~kJ}$
AP EAMCET (Engg.)-2009
Thermodynamics

272342 For strong acid and strong base neutralization net chemical change is $\mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_2 \mathrm{O}$ (I) $\Delta \mathrm{H}_{\mathrm{r}}^0=-55.84 \mathrm{~kJ} \mathrm{~mol}^{-1}$ If enthalpy of neutralization of $\mathrm{CH}_3 \mathrm{COOH}$ by $\mathrm{NaOH}$ is $49.86 \mathrm{~kJ} \mathrm{~mol}^{-1}$ then enthalpy of ionization of $\mathrm{CH}_3 \mathrm{COOH}$ is

1 $5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
2 $-5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
3 $105.7 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-59.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$
AP EAPCET 24.08.2021 Shift-II
NEET DIGITAL LIBRARY
Thermodynamics

272338 What is the value of internal energy change $(\Delta E)$ at $27^{\circ} \mathrm{C}$ of a gaseous reaction $2 \mathrm{~A}_2(\mathrm{~g})+$ $5^2 \mathrm{~B}_2(\mathrm{~g}) \rightarrow 2 \mathrm{~A}_2 \mathrm{~B}_5(\mathrm{~g})$ (whose heat change at constant pressure is $-50700 \mathrm{~J})$ ? $\left[\mathbf{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\right]$

1 $-50700 \mathrm{~J}$
2 $-63171 \mathrm{~J}$
3 $-38229 \mathrm{~J}$
4 $+38229 \mathrm{~J}$
SCRA - 2009
Thermodynamics

272340 Given $\Delta \mathrm{H}_{\mathrm{f}}$ ofor $\mathrm{CO}_2(\mathrm{~g}), \mathrm{CO}(\mathrm{g})$ and $\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ are $-393.5,-110.5$ and $-241.8 \quad \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. The $\Delta \mathrm{H}_{\mathrm{f}}$. [in $\mathrm{kJ} \mathrm{mol}^{-1}$ ] for the reaction
$\mathrm{CO}_2(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ is

1 524.1
2 -262.5
3 -41.7
4 41.2
TS EAMCET-2017
Thermodynamics

272341 Calculate $\Delta \mathbf{H}^{\circ}$ for the reaction, $\mathrm{Na}_2 \mathrm{O}(\mathrm{s})+\mathrm{SO}_3(\mathrm{~g}) \rightarrow \mathrm{Na}_2 \mathrm{SO}_4(\mathrm{~g})$
Given the following:

1 $+823 \mathrm{~kJ}$
2 $-581 \mathrm{~kJ}$
3 $-435 \mathrm{~kJ}$
4 $+531 \mathrm{~kJ}$
AP EAMCET (Engg.)-2009
Thermodynamics

272342 For strong acid and strong base neutralization net chemical change is $\mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_2 \mathrm{O}$ (I) $\Delta \mathrm{H}_{\mathrm{r}}^0=-55.84 \mathrm{~kJ} \mathrm{~mol}^{-1}$ If enthalpy of neutralization of $\mathrm{CH}_3 \mathrm{COOH}$ by $\mathrm{NaOH}$ is $49.86 \mathrm{~kJ} \mathrm{~mol}^{-1}$ then enthalpy of ionization of $\mathrm{CH}_3 \mathrm{COOH}$ is

1 $5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
2 $-5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
3 $105.7 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-59.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$
AP EAPCET 24.08.2021 Shift-II
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Thermodynamics

272338 What is the value of internal energy change $(\Delta E)$ at $27^{\circ} \mathrm{C}$ of a gaseous reaction $2 \mathrm{~A}_2(\mathrm{~g})+$ $5^2 \mathrm{~B}_2(\mathrm{~g}) \rightarrow 2 \mathrm{~A}_2 \mathrm{~B}_5(\mathrm{~g})$ (whose heat change at constant pressure is $-50700 \mathrm{~J})$ ? $\left[\mathbf{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\right]$

1 $-50700 \mathrm{~J}$
2 $-63171 \mathrm{~J}$
3 $-38229 \mathrm{~J}$
4 $+38229 \mathrm{~J}$
SCRA - 2009
Thermodynamics

272340 Given $\Delta \mathrm{H}_{\mathrm{f}}$ ofor $\mathrm{CO}_2(\mathrm{~g}), \mathrm{CO}(\mathrm{g})$ and $\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ are $-393.5,-110.5$ and $-241.8 \quad \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. The $\Delta \mathrm{H}_{\mathrm{f}}$. [in $\mathrm{kJ} \mathrm{mol}^{-1}$ ] for the reaction
$\mathrm{CO}_2(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ is

1 524.1
2 -262.5
3 -41.7
4 41.2
TS EAMCET-2017
Thermodynamics

272341 Calculate $\Delta \mathbf{H}^{\circ}$ for the reaction, $\mathrm{Na}_2 \mathrm{O}(\mathrm{s})+\mathrm{SO}_3(\mathrm{~g}) \rightarrow \mathrm{Na}_2 \mathrm{SO}_4(\mathrm{~g})$
Given the following:

1 $+823 \mathrm{~kJ}$
2 $-581 \mathrm{~kJ}$
3 $-435 \mathrm{~kJ}$
4 $+531 \mathrm{~kJ}$
AP EAMCET (Engg.)-2009
Thermodynamics

272342 For strong acid and strong base neutralization net chemical change is $\mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_2 \mathrm{O}$ (I) $\Delta \mathrm{H}_{\mathrm{r}}^0=-55.84 \mathrm{~kJ} \mathrm{~mol}^{-1}$ If enthalpy of neutralization of $\mathrm{CH}_3 \mathrm{COOH}$ by $\mathrm{NaOH}$ is $49.86 \mathrm{~kJ} \mathrm{~mol}^{-1}$ then enthalpy of ionization of $\mathrm{CH}_3 \mathrm{COOH}$ is

1 $5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
2 $-5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
3 $105.7 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-59.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$
AP EAPCET 24.08.2021 Shift-II
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Thermodynamics

272338 What is the value of internal energy change $(\Delta E)$ at $27^{\circ} \mathrm{C}$ of a gaseous reaction $2 \mathrm{~A}_2(\mathrm{~g})+$ $5^2 \mathrm{~B}_2(\mathrm{~g}) \rightarrow 2 \mathrm{~A}_2 \mathrm{~B}_5(\mathrm{~g})$ (whose heat change at constant pressure is $-50700 \mathrm{~J})$ ? $\left[\mathbf{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\right]$

1 $-50700 \mathrm{~J}$
2 $-63171 \mathrm{~J}$
3 $-38229 \mathrm{~J}$
4 $+38229 \mathrm{~J}$
SCRA - 2009
Thermodynamics

272340 Given $\Delta \mathrm{H}_{\mathrm{f}}$ ofor $\mathrm{CO}_2(\mathrm{~g}), \mathrm{CO}(\mathrm{g})$ and $\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ are $-393.5,-110.5$ and $-241.8 \quad \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. The $\Delta \mathrm{H}_{\mathrm{f}}$. [in $\mathrm{kJ} \mathrm{mol}^{-1}$ ] for the reaction
$\mathrm{CO}_2(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2 \mathrm{O}(\mathrm{g})$ is

1 524.1
2 -262.5
3 -41.7
4 41.2
TS EAMCET-2017
Thermodynamics

272341 Calculate $\Delta \mathbf{H}^{\circ}$ for the reaction, $\mathrm{Na}_2 \mathrm{O}(\mathrm{s})+\mathrm{SO}_3(\mathrm{~g}) \rightarrow \mathrm{Na}_2 \mathrm{SO}_4(\mathrm{~g})$
Given the following:

1 $+823 \mathrm{~kJ}$
2 $-581 \mathrm{~kJ}$
3 $-435 \mathrm{~kJ}$
4 $+531 \mathrm{~kJ}$
AP EAMCET (Engg.)-2009
Thermodynamics

272342 For strong acid and strong base neutralization net chemical change is $\mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_2 \mathrm{O}$ (I) $\Delta \mathrm{H}_{\mathrm{r}}^0=-55.84 \mathrm{~kJ} \mathrm{~mol}^{-1}$ If enthalpy of neutralization of $\mathrm{CH}_3 \mathrm{COOH}$ by $\mathrm{NaOH}$ is $49.86 \mathrm{~kJ} \mathrm{~mol}^{-1}$ then enthalpy of ionization of $\mathrm{CH}_3 \mathrm{COOH}$ is

1 $5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
2 $-5.98 \mathrm{~kJ} \mathrm{~mol}^{-1}$
3 $105.7 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-59.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$
AP EAPCET 24.08.2021 Shift-II
NEET DIGITAL LIBRARY