Find the enthalpy of neutralisation in $kJ/mol$ for the reaction between $NH_4OH$ and $HCN$ in aqueous solution,given that the enthalpies of ionisation of $NH_4OH$ and $HCN$ are $7 \ kJ/mol$ and $8 \ kJ/mol$ respectively,and the enthalpy of neutralisation of a strong acid and a strong base is $-57.3 \ kJ/mol$.
- A$-42.3$
- B$-57.3$
- C$-72.3$
- D$+42.3$
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Similar Questions
Find the heat required to convert $10 \ g$ of ice at $0.0^{\circ} C$ into water at $30^{\circ} C$. (Enthalpy of fusion of ice $= 333.5 \ J \ g^{-1}$,$C_p$ of water $= 4.18 \ J \ g^{-1} \ K^{-1}$) (in $kJ$)
The heat of neutralization of a strong acid and a strong alkali is $-57.0 \ kJ \ mol^{-1}$. The heat released when $0.5 \ mole$ of $HNO_3$ solution is mixed with $0.2 \ mole$ of $KOH$ is ....$kJ$
Medium
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:
The enthalpy change on freezing of $1 \ mol$ of water at $5 \ ^\circ C$ to ice at $-5 \ ^\circ C$ is ..... $kJ \ mol^{-1}$.
(Given $\Delta _{fus}H = 6 \ kJ \ mol^{-1}$ at $0 \ ^\circ C$,
$C_p(H_2O, l) = 75.3 \ J \ mol^{-1} \ K^{-1}$,
$C_p(H_2O, s) = 36.8 \ J \ mol^{-1} \ K^{-1}$)
(Given $\Delta _{fus}H = 6 \ kJ \ mol^{-1}$ at $0 \ ^\circ C$,
$C_p(H_2O, l) = 75.3 \ J \ mol^{-1} \ K^{-1}$,
$C_p(H_2O, s) = 36.8 \ J \ mol^{-1} \ K^{-1}$)
DifficultJEE MAIN 2017
View SolutionMatch the following:
$A$. Isothermal process $i$. $q = \Delta U$ $B$. Adiabatic process $ii$. $W = - P \times \Delta V$ $C$. Isobaric process $iii$. $W = \Delta U$ $D$. Isochoric process $iv$. $W = - nRT \ln \left(\frac{v_f}{v_i}\right)$
| $A$. Isothermal process | $i$. $q = \Delta U$ |
| $B$. Adiabatic process | $ii$. $W = - P \times \Delta V$ |
| $C$. Isobaric process | $iii$. $W = \Delta U$ |
| $D$. Isochoric process | $iv$. $W = - nRT \ln \left(\frac{v_f}{v_i}\right)$ |
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