An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If $T_i$ is the initial temperature and $T_f$ is the final temperature,which of the following statements is correct?
- A$(T_f)_{rev} = (T_f)_{irrev}$
- B$T_f = T_i$ for both reversible and irreversible processes
- C$(T_f)_{irrev} > (T_f)_{rev}$
- D$T_f > T_i$ for reversible process but $T_f = T_i$ for irreversible process
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The quantity of heat (in $J$) required to raise the temperature of $1.0 \, kg$ of ethanol from $293.45 \, K$ to the boiling point and then change the liquid to vapor at that temperature is closest to
[Given,boiling point of ethanol $351.45 \, K$. Specific heat capacity of liquid ethanol $2.44 \, J \, g^{-1} \, K^{-1}$. Latent heat of vaporisation of ethanol $855 \, J \, g^{-1}$ ]
[Given,boiling point of ethanol $351.45 \, K$. Specific heat capacity of liquid ethanol $2.44 \, J \, g^{-1} \, K^{-1}$. Latent heat of vaporisation of ethanol $855 \, J \, g^{-1}$ ]
MediumKVPY 2018
View SolutionMatch List-$I$ with List-$II$
List-$I$ List-$II$ $A$. Spontaneous process $I$. $\Delta H < 0$ $B$. Process with $\Delta P = 0; \Delta T = 0$ $II$. $\Delta G_{T, P} < 0$ $C$. $\Delta H_{reaction}$ $III$. Isothermal and isobaric process $D$. Exothermic process $IV$. [Bond energies of molecules in reactants] - [Bond energies of product molecules]
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $A$. Spontaneous process | $I$. $\Delta H < 0$ |
| $B$. Process with $\Delta P = 0; \Delta T = 0$ | $II$. $\Delta G_{T, P} < 0$ |
| $C$. $\Delta H_{reaction}$ | $III$. Isothermal and isobaric process |
| $D$. Exothermic process | $IV$. [Bond energies of molecules in reactants] - [Bond energies of product molecules] |
Choose the correct answer from the options given below:
Identify the incorrect statements from the following.
$I$. For adiabatic process,$\Delta U = w_{ad}$
$II$. Enthalpy is an intensive property
$III$. For the process,$H_2O_{(l)} \rightarrow H_2O_{(s)}$,the entropy increases
$I$. For adiabatic process,$\Delta U = w_{ad}$
$II$. Enthalpy is an intensive property
$III$. For the process,$H_2O_{(l)} \rightarrow H_2O_{(s)}$,the entropy increases
$\Delta H_f^o$ of water is $-285.5\, kJ\, mol^{-1}$. If enthalpy of neutralisation of monoacidic strong base is $-57.3\, kJ\, mol^{-1}$,$\Delta H_f^o$ of $OH^{-}$ ion will be $.....\, kJ\, mol^{-1}$.
Medium
View SolutionWhich of the following is incorrect?
Medium
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