MyQuestionIcon

1

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

Factors Affected by Hydrogen Bonding

One mole of s...

Question

One mole of soda ash dissolves in water with evoution of 25 kJ of heat. Dissolution of 1 mol of the hydragte crystals in water resulted in the absorption of 67 kJ of heat. The heat released due to hydration of soda ash is

A

- 92 kJ

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

+ 42 kJ

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

-42 kJ

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

-102 kJ

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A - 92 kJ
From hess's law
$△ H_{s o l n} (a n h y d r o u s s a l t) = △ H_{h y d r a t i o n} + △ H_{s o l u t i o n} (h y d r a t e d s a l t) \Rightarrow △ H_{h y d r a t i o n} = (- 25 k J) - (+ 67 k J) △ H_{h y d r a t i o n} = - 92 k J$

Suggest Corrections

thumbs-up

0

Similar questions

Q. One mole of soda ash dissolves in water with evolution of 25 kJ of heat. Dissolution of 1 mol of the hydrate crystals in water resulted in the absorption of 67 kJ of heat. The heat released due to hydration of soda ash is

Q. One mole of soda ash dissolves in water with evolution of 25 kJ of heat. Dissociation of 1 mol of the hydrate crystals in water resulted in the absorption of 67 kJ of heat. The heat released due to hydration of soda ash is

Q. One mole of soda ash dissolves in water with evolution of 25 kJ of heat. Dissolution of 1 mol of the hydrate crystals in water resulted in the absorption of 67 kJ of heat. The heat released due to hydration of soda ash is

Q. One mole of soda ash dissolves in water with evolution of 25 kJ of heat. Dissociation of 1 mol of the hydrate crystals in water resulted in the absorption of 67 kJ of heat. The heat released due to hydration of soda ash is

Q. One mole of anhydrous

M g C l_{2}

dissolve in water and liberates

25

cal/mol of heat.

Δ H_{h y d r a t i o n}

M g C l_{2} = - 30

cal/mol. Heat of dissolution of

M g C l_{2} \cdot H_{2} O

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Hydrogen Bond

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Factors Affected by Hydrogen Bonding

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon