00. Thermodynamics Terms
Thermodynamics

272454 $\mathrm{K}$ for $\mathrm{CH}_3 \mathrm{COOH}$ at $25^0 \mathrm{C}$ is $1.754 \times 10^{-5}$. At $50^0 \mathrm{C} \mathrm{K}$ is $1.633 \times 10^{-5}$. What are $\Delta \mathrm{H}^0$ and $\Delta \mathrm{S}^0$ for the ionization of $\mathrm{CH}_3 \mathrm{COOH}$ ?

1 $-1.55 \mathrm{kJmol}^{-1},-96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
2 $-2.55 \mathrm{kJmol}^{-1},-106.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
3 $1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
4 $-1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
Thermodynamics

272458 For a particular reversible reaction at temperature $T, \Delta H$ and $\Delta S$ were found to be both +ve. If $T_e$ is the temperature at equilibrium, the reaction would be spontaneous when

1 $\mathrm{T}_{\mathrm{e}}>\mathrm{T}$
2 $\mathrm{T}>\mathrm{T}_{\mathrm{e}}$
3 $T_e$ is 5 times $T$
4 $\mathrm{T}=\mathrm{T}_{\mathrm{e}}$
Thermodynamics

272459 For the reaction $\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})$
Which one of the statement is correct at constant $T$ and $P$ ?

1 $\Delta \mathrm{H}=\Delta \mathrm{E}$
2 $\Delta \mathrm{H}<\Delta \mathrm{E}$
3 $\Delta \mathrm{H}>\Delta \mathrm{E}$
4 $\Delta \mathrm{H}$ is independent of physical state of the reactants.
Thermodynamics

272460 For the chemical reaction, $\mathrm{N}_2+3 \mathrm{H}_2 \rightarrow 2 \mathrm{NH}_3$, if $\frac{\mathrm{d}\left[\mathrm{NH}_3\right]}{\mathrm{dt}}=2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, the value of $\frac{-\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}$ is

1 $1 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
2 $3 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
3 $4 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
4 $6 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
Thermodynamics

272454 $\mathrm{K}$ for $\mathrm{CH}_3 \mathrm{COOH}$ at $25^0 \mathrm{C}$ is $1.754 \times 10^{-5}$. At $50^0 \mathrm{C} \mathrm{K}$ is $1.633 \times 10^{-5}$. What are $\Delta \mathrm{H}^0$ and $\Delta \mathrm{S}^0$ for the ionization of $\mathrm{CH}_3 \mathrm{COOH}$ ?

1 $-1.55 \mathrm{kJmol}^{-1},-96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
2 $-2.55 \mathrm{kJmol}^{-1},-106.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
3 $1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
4 $-1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
Thermodynamics

272458 For a particular reversible reaction at temperature $T, \Delta H$ and $\Delta S$ were found to be both +ve. If $T_e$ is the temperature at equilibrium, the reaction would be spontaneous when

1 $\mathrm{T}_{\mathrm{e}}>\mathrm{T}$
2 $\mathrm{T}>\mathrm{T}_{\mathrm{e}}$
3 $T_e$ is 5 times $T$
4 $\mathrm{T}=\mathrm{T}_{\mathrm{e}}$
Thermodynamics

272459 For the reaction $\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})$
Which one of the statement is correct at constant $T$ and $P$ ?

1 $\Delta \mathrm{H}=\Delta \mathrm{E}$
2 $\Delta \mathrm{H}<\Delta \mathrm{E}$
3 $\Delta \mathrm{H}>\Delta \mathrm{E}$
4 $\Delta \mathrm{H}$ is independent of physical state of the reactants.
Thermodynamics

272460 For the chemical reaction, $\mathrm{N}_2+3 \mathrm{H}_2 \rightarrow 2 \mathrm{NH}_3$, if $\frac{\mathrm{d}\left[\mathrm{NH}_3\right]}{\mathrm{dt}}=2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, the value of $\frac{-\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}$ is

1 $1 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
2 $3 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
3 $4 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
4 $6 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
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Thermodynamics

272454 $\mathrm{K}$ for $\mathrm{CH}_3 \mathrm{COOH}$ at $25^0 \mathrm{C}$ is $1.754 \times 10^{-5}$. At $50^0 \mathrm{C} \mathrm{K}$ is $1.633 \times 10^{-5}$. What are $\Delta \mathrm{H}^0$ and $\Delta \mathrm{S}^0$ for the ionization of $\mathrm{CH}_3 \mathrm{COOH}$ ?

1 $-1.55 \mathrm{kJmol}^{-1},-96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
2 $-2.55 \mathrm{kJmol}^{-1},-106.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
3 $1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
4 $-1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
Thermodynamics

272458 For a particular reversible reaction at temperature $T, \Delta H$ and $\Delta S$ were found to be both +ve. If $T_e$ is the temperature at equilibrium, the reaction would be spontaneous when

1 $\mathrm{T}_{\mathrm{e}}>\mathrm{T}$
2 $\mathrm{T}>\mathrm{T}_{\mathrm{e}}$
3 $T_e$ is 5 times $T$
4 $\mathrm{T}=\mathrm{T}_{\mathrm{e}}$
Thermodynamics

272459 For the reaction $\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})$
Which one of the statement is correct at constant $T$ and $P$ ?

1 $\Delta \mathrm{H}=\Delta \mathrm{E}$
2 $\Delta \mathrm{H}<\Delta \mathrm{E}$
3 $\Delta \mathrm{H}>\Delta \mathrm{E}$
4 $\Delta \mathrm{H}$ is independent of physical state of the reactants.
Thermodynamics

272460 For the chemical reaction, $\mathrm{N}_2+3 \mathrm{H}_2 \rightarrow 2 \mathrm{NH}_3$, if $\frac{\mathrm{d}\left[\mathrm{NH}_3\right]}{\mathrm{dt}}=2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, the value of $\frac{-\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}$ is

1 $1 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
2 $3 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
3 $4 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
4 $6 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
Thermodynamics

272454 $\mathrm{K}$ for $\mathrm{CH}_3 \mathrm{COOH}$ at $25^0 \mathrm{C}$ is $1.754 \times 10^{-5}$. At $50^0 \mathrm{C} \mathrm{K}$ is $1.633 \times 10^{-5}$. What are $\Delta \mathrm{H}^0$ and $\Delta \mathrm{S}^0$ for the ionization of $\mathrm{CH}_3 \mathrm{COOH}$ ?

1 $-1.55 \mathrm{kJmol}^{-1},-96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
2 $-2.55 \mathrm{kJmol}^{-1},-106.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
3 $1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
4 $-1.55 \mathrm{kJmol}^{-1}, 96.44 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$
Thermodynamics

272458 For a particular reversible reaction at temperature $T, \Delta H$ and $\Delta S$ were found to be both +ve. If $T_e$ is the temperature at equilibrium, the reaction would be spontaneous when

1 $\mathrm{T}_{\mathrm{e}}>\mathrm{T}$
2 $\mathrm{T}>\mathrm{T}_{\mathrm{e}}$
3 $T_e$ is 5 times $T$
4 $\mathrm{T}=\mathrm{T}_{\mathrm{e}}$
Thermodynamics

272459 For the reaction $\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})$
Which one of the statement is correct at constant $T$ and $P$ ?

1 $\Delta \mathrm{H}=\Delta \mathrm{E}$
2 $\Delta \mathrm{H}<\Delta \mathrm{E}$
3 $\Delta \mathrm{H}>\Delta \mathrm{E}$
4 $\Delta \mathrm{H}$ is independent of physical state of the reactants.
Thermodynamics

272460 For the chemical reaction, $\mathrm{N}_2+3 \mathrm{H}_2 \rightarrow 2 \mathrm{NH}_3$, if $\frac{\mathrm{d}\left[\mathrm{NH}_3\right]}{\mathrm{dt}}=2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, the value of $\frac{-\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}$ is

1 $1 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
2 $3 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
3 $4 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$
4 $6 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$