The heat of solution of anhydrous ( CuSO _ 4 ) and (CuSO _ 4 · 5 H _ 2 O ) are (-70 ~kJ ~mol^ -1 ) and (+12 ~kJ ~mol^ -1 ) respectively. The heat of hydration of (CuSO _ 4 ) to ( CuSO _ 4 ·5 H _ 2 O ) is (-x ~kJ ). The

Correct answer: 0 gathered from (1) \&(2) -70=x+12 x=-82 gathered

JEE Main 20249 AprilMorning Shift

JEE Main 2024 · 9 April · Morning Shift · Chemistry · Thermodynamics (C)

The heat of solution of anhydrous ( CuSO _ 4 ) and (CuSO _ 4 · 5 H...

The heat of solution of anhydrous (

\mathrm{CuSO}}_{4}) and (\mathrm{CuSO}

}_{4}

\cdot

\mathrm{H}}_{2}

\mathrm{O}

) are (-70 \mathrm{~kJ} \mathrm{~mol}^{-1}) and (+12 \mathrm{~kJ} \mathrm{~mol}^{-1}) respectively. The heat of hydration of (\mathrm{CuSO}

}_{4}) to (

\mathrm{CuSO}}_{4} \cdot5 \mathrm{H}

}_{2}

\mathrm{O}

) is (-x

\mathrm{~kJ}

). The value of

x

is ______ (nearest integer).

\begin{gathered}\text{ from }(1) \&(2) \\ -70=x+12 \\ x=-82\end{gathered}