03. Heat of Reaction
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Thermodynamics

272778 When $10 \mathrm{~g}$ of methane is completely burnt in oxygen, the heat evolved is $560 \mathrm{~kJ}$. What is the heat of combustion (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of methane?

1 -1120
2 -968
3 -896
4 -560
(A.P.EAMCET-2003)
Thermodynamics

272828 The change of energy on vaporizing $1.00 \mathrm{~kg}$ of liquid water at $0^{\circ} \mathrm{C}$ and 1 atm is

1 $2367 \mathrm{~kJ} \mathrm{~kg}^{-1}$
2 $333.4 \mathrm{~kJ} \mathrm{~kg}^{-1}$
3 $-333.4 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-2367 \mathrm{~kJ} \mathrm{~g}^{-1}$
AMU-2012
Thermodynamics

272780 Calculate $\Delta \mathrm{H}$ in $\mathrm{kJ}$ for the following reaction $\mathrm{C}(\mathrm{g})+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
Given that,
$\mathrm{H}_2 \mathrm{O}(\mathrm{g})+\mathrm{C}(\mathrm{g}) \longrightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2(\mathrm{~g}) ;$
$\Delta \mathrm{H}=+131 \mathrm{~kJ}$
$\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
$\mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g}) \Delta \mathrm{H}=-242 \mathrm{~kJ}$

1 -393
2 +393
3 +655
4 -655
(A.P.EAMCET-2008)
Thermodynamics

272781 Calculate enthalpy for formation of ethylene from the following data.
(I) $\mathrm{C}_{\text {(graphict) }}+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$;
$\Delta \mathrm{H}=-393.5 \mathrm{kJmol}^{-1}$
(II) $\mathrm{H}_2(\mathrm{~g})+\frac{\mathbf{1}}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-286.2 \mathrm{kJmol}^{-1}$
(III) $\mathrm{C}_2 \mathrm{H}_4(\mathrm{~g})+3 \mathrm{O}_2$ (g) $\rightarrow 2 \mathrm{CO}_2$ (g) $+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-1410.8 \mathrm{kJmol}^{-1}$

1 $54.1 \mathrm{~kJ}$
2 $44.8 \mathrm{~kJ}$
3 $51.4 \mathrm{~kJ}$
4 $48.4 \mathrm{~kJ}$
(A.P.EAMCET-2007)
NEET DIGITAL LIBRARY
Thermodynamics

272778 When $10 \mathrm{~g}$ of methane is completely burnt in oxygen, the heat evolved is $560 \mathrm{~kJ}$. What is the heat of combustion (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of methane?

1 -1120
2 -968
3 -896
4 -560
(A.P.EAMCET-2003)
Thermodynamics

272828 The change of energy on vaporizing $1.00 \mathrm{~kg}$ of liquid water at $0^{\circ} \mathrm{C}$ and 1 atm is

1 $2367 \mathrm{~kJ} \mathrm{~kg}^{-1}$
2 $333.4 \mathrm{~kJ} \mathrm{~kg}^{-1}$
3 $-333.4 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-2367 \mathrm{~kJ} \mathrm{~g}^{-1}$
AMU-2012
Thermodynamics

272780 Calculate $\Delta \mathrm{H}$ in $\mathrm{kJ}$ for the following reaction $\mathrm{C}(\mathrm{g})+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
Given that,
$\mathrm{H}_2 \mathrm{O}(\mathrm{g})+\mathrm{C}(\mathrm{g}) \longrightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2(\mathrm{~g}) ;$
$\Delta \mathrm{H}=+131 \mathrm{~kJ}$
$\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
$\mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g}) \Delta \mathrm{H}=-242 \mathrm{~kJ}$

1 -393
2 +393
3 +655
4 -655
(A.P.EAMCET-2008)
Thermodynamics

272781 Calculate enthalpy for formation of ethylene from the following data.
(I) $\mathrm{C}_{\text {(graphict) }}+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$;
$\Delta \mathrm{H}=-393.5 \mathrm{kJmol}^{-1}$
(II) $\mathrm{H}_2(\mathrm{~g})+\frac{\mathbf{1}}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-286.2 \mathrm{kJmol}^{-1}$
(III) $\mathrm{C}_2 \mathrm{H}_4(\mathrm{~g})+3 \mathrm{O}_2$ (g) $\rightarrow 2 \mathrm{CO}_2$ (g) $+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-1410.8 \mathrm{kJmol}^{-1}$

1 $54.1 \mathrm{~kJ}$
2 $44.8 \mathrm{~kJ}$
3 $51.4 \mathrm{~kJ}$
4 $48.4 \mathrm{~kJ}$
(A.P.EAMCET-2007)
Join With Us for More Updates
Thermodynamics

272778 When $10 \mathrm{~g}$ of methane is completely burnt in oxygen, the heat evolved is $560 \mathrm{~kJ}$. What is the heat of combustion (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of methane?

1 -1120
2 -968
3 -896
4 -560
(A.P.EAMCET-2003)
Thermodynamics

272828 The change of energy on vaporizing $1.00 \mathrm{~kg}$ of liquid water at $0^{\circ} \mathrm{C}$ and 1 atm is

1 $2367 \mathrm{~kJ} \mathrm{~kg}^{-1}$
2 $333.4 \mathrm{~kJ} \mathrm{~kg}^{-1}$
3 $-333.4 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-2367 \mathrm{~kJ} \mathrm{~g}^{-1}$
AMU-2012
Thermodynamics

272780 Calculate $\Delta \mathrm{H}$ in $\mathrm{kJ}$ for the following reaction $\mathrm{C}(\mathrm{g})+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
Given that,
$\mathrm{H}_2 \mathrm{O}(\mathrm{g})+\mathrm{C}(\mathrm{g}) \longrightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2(\mathrm{~g}) ;$
$\Delta \mathrm{H}=+131 \mathrm{~kJ}$
$\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
$\mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g}) \Delta \mathrm{H}=-242 \mathrm{~kJ}$

1 -393
2 +393
3 +655
4 -655
(A.P.EAMCET-2008)
Thermodynamics

272781 Calculate enthalpy for formation of ethylene from the following data.
(I) $\mathrm{C}_{\text {(graphict) }}+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$;
$\Delta \mathrm{H}=-393.5 \mathrm{kJmol}^{-1}$
(II) $\mathrm{H}_2(\mathrm{~g})+\frac{\mathbf{1}}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-286.2 \mathrm{kJmol}^{-1}$
(III) $\mathrm{C}_2 \mathrm{H}_4(\mathrm{~g})+3 \mathrm{O}_2$ (g) $\rightarrow 2 \mathrm{CO}_2$ (g) $+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-1410.8 \mathrm{kJmol}^{-1}$

1 $54.1 \mathrm{~kJ}$
2 $44.8 \mathrm{~kJ}$
3 $51.4 \mathrm{~kJ}$
4 $48.4 \mathrm{~kJ}$
(A.P.EAMCET-2007)
For More Updates join with Us
Thermodynamics

272778 When $10 \mathrm{~g}$ of methane is completely burnt in oxygen, the heat evolved is $560 \mathrm{~kJ}$. What is the heat of combustion (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of methane?

1 -1120
2 -968
3 -896
4 -560
(A.P.EAMCET-2003)
Thermodynamics

272828 The change of energy on vaporizing $1.00 \mathrm{~kg}$ of liquid water at $0^{\circ} \mathrm{C}$ and 1 atm is

1 $2367 \mathrm{~kJ} \mathrm{~kg}^{-1}$
2 $333.4 \mathrm{~kJ} \mathrm{~kg}^{-1}$
3 $-333.4 \mathrm{~kJ} \mathrm{~mol}^{-1}$
4 $-2367 \mathrm{~kJ} \mathrm{~g}^{-1}$
AMU-2012
Thermodynamics

272780 Calculate $\Delta \mathrm{H}$ in $\mathrm{kJ}$ for the following reaction $\mathrm{C}(\mathrm{g})+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
Given that,
$\mathrm{H}_2 \mathrm{O}(\mathrm{g})+\mathrm{C}(\mathrm{g}) \longrightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_2(\mathrm{~g}) ;$
$\Delta \mathrm{H}=+131 \mathrm{~kJ}$
$\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$
$\mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g}) \Delta \mathrm{H}=-242 \mathrm{~kJ}$

1 -393
2 +393
3 +655
4 -655
(A.P.EAMCET-2008)
Thermodynamics

272781 Calculate enthalpy for formation of ethylene from the following data.
(I) $\mathrm{C}_{\text {(graphict) }}+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})$;
$\Delta \mathrm{H}=-393.5 \mathrm{kJmol}^{-1}$
(II) $\mathrm{H}_2(\mathrm{~g})+\frac{\mathbf{1}}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-286.2 \mathrm{kJmol}^{-1}$
(III) $\mathrm{C}_2 \mathrm{H}_4(\mathrm{~g})+3 \mathrm{O}_2$ (g) $\rightarrow 2 \mathrm{CO}_2$ (g) $+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$;
$\Delta \mathrm{H}=-1410.8 \mathrm{kJmol}^{-1}$

1 $54.1 \mathrm{~kJ}$
2 $44.8 \mathrm{~kJ}$
3 $51.4 \mathrm{~kJ}$
4 $48.4 \mathrm{~kJ}$
(A.P.EAMCET-2007)
NEET DIGITAL LIBRARY