MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Heat of Reaction

The enthalpy ...

Question

The enthalpy change of solution of $B a C l_{2} \cdot 2 H_{2} O$ and $B a C l_{2}$ are $8.8$ and $- 20.6$ kJ/mol respectively. Calculator enthalpy change of hydration of $B a C l_{2}$ into $B a C l_{2} \cdot 2 H_{2} O$ .

Open in App

Solution

1. $B a C l_{2} . H_{2} O (s) + a q$ $\to$ $B a C l_{2} (a q)$
$Δ S o l H_{1}^{0} = 8.8$ $K J m o l^{- 1}$
2. $B a C l_{2} (s) + a q$ $\to$ $B a C l_{2} (a q)$
$Δ S o l H_{2}^{0} = - 20.6$ $K J m o l^{- 1}$
according to question
$B a C l_{2} (s)$ $+ 2 H_{2} O \to$ $B a C l_{2} .2 H_{2} O (s)$
$Δ h y d H^{0} = ?$
according to hess law
$Δ h y d H^{0}$ $+ 8 .8 K J m o l^{-} 1 = - 20.6 K J m o l^{-} 1$

$Δ h y d H^{0}$ $= - 29.4 K J m o l^{-} 1$

Suggest Corrections

thumbs-up

1

Similar questions

Q. The enthalpy of solution of

B a C l_{2} (s)

B a C l_{2} .2 H_{2} O (s)

are – 20.6 and 8.8 kJ

m o l^{- 1}

respectively, the enthalpy change for the hydration of

B a C l_{2} (s)

Q. The enthalpy of solution of

B a C l_{2} (s)

B a C l_{2} .2 H_{2} O (s)

are – 20.6 and 8.8 kJ

m o l^{- 1}

respectively, the enthalpy change for the hydration of

B a C l_{2} (s)

Q. The enthalpy of solution of

B a C l_{2} (s)

B a C l_{2} .2 H_{2} O (s)

- 20.6

8.8 k J m o l^{- 1}

respectively. The enthalpy change for the rection

B a C l_{2} (s) + 2 H_{2} O (a q) \to B a C l_{2} (s) .2 H_{2} O (s)

Q. The enthalpy of solution of

B a C l_{2 (s)}

B a C l_{2} .2 H_{2} O_{(s)}

are -20.6 and 8.8KJ/mol respectively. The enthalpy change for the reaction

B a C l_{2 (s)} + 2 H_{2} O ⟶ B a C l_{2} .2 H_{2} O

Q. Enthalpies of solution of

B a C l_{2} .2 H_{2} O

B a C l_{2}

8.8

- 20.6 k J m o l^{- 1}

respectively. Calculate the heat of hydration of

B a C l_{2}

B a {C l}_{2} .2 H_{2} O

.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Thermochemistry

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Heat of Reaction

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon