You visited us 79 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Hess' Law

Hess's law is...

Question

Hess's law is related to:

change in heat during a reaction

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

rates of reaction

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

equilibrium constant

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

influence of pressure on volume of a gas

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

Open in App

Solution

The correct option is A change in heat during a reaction
Hess's law is related to change in heat during a reaction.
It states that the total change in heat enthalpy during the complete course of reaction is same whether the change is brought in one step or in several steps by one method or other method.

Suggest Corrections

Similar questions

A gas expands against a variable pressure given by $p = \frac{20}{V}$ During expansion from volume of 1 litre to 1 litre, the gas undergoes a change in internal energy of 400 J. How much heat is absorbed by the gas during expansion?

3000 J

of heat is given to a gas at a constant pressure of

P = 2 \times 10^{5} {N/m}^{2} .

If its volume increases by

10

litres during the process, find the change in internal energy of the gas. (in Joules)

3000 J

of heat is given to a gas at a constant pressure of

2 \times 10^{5} N / m^{2}

. If its volume increases by

10

litres during the process find the change in the internal energy of the gas.

Q. The volume of gas decreases from

500 c c

300 c c

when a sample of gas is compressed by an average pressure of

0.6 a t m

. During this process,

10 J

of heat is liberated. The change in internal energy is:

3000 J

of heat is given to a gas at a constant pressure of

P = (2 \times 10^{5} N / m^{2})

.
If its volume increases by 10 litres during the process, find the change in the internal energy of the gas.

Join BYJU'S Learning Program