Home
Class 11
CHEMISTRY
A gas expands by 0.5L against a constant...

A gas expands by `0.5L` against a constant pressure of `1 atm`. Calculate the work done in joule and calorie.

Text Solution

Verified by Experts

`w=-P_(ext)DeltaV=-1xx0.5=-0.5` litre - atm
`=-0.5xx101.325J=50.664J`
`-0.5` litre atm `=-0.5xx24.20cal=-12.10` cal
Promotional Banner

Similar Questions

Explore conceptually related problems

A gas expands by 2 litres against a constant pressure of 2 atm. Calculate work done in Joule and Calorie.

One mole of a gas expands by 3L against a constant pressure of 3 atmosphere. Calculate the work done in : (a) L. atmosphere (b) Joules (c) Calories

A gas expands by 0.372 litre against a constant pressure of 1atm . Find the work done in cal.

A gas expands from 4.0 L to 4.5 L against a constant external pressure of 1 atm. The work done by the gas is (1 L-atm = 101.3 J)

An ideal gas is allowed to expand from 1 L to 10 L against a constant external pressure of 1 bar. Calculate the work done inkJ.

A gas expands from 3 dm^(3) to 5 dm^(3) against a constant pressure of 3 atm. The work done during expansion is used to heat 10 mol of water at a temperature of 290 K. Calculate final temperature of water. Specific heat of water =4.184 J g^(-1)K^(-1)

Three moles of the ideal gas are expanded isothermally from a volume of 300 cm^(3) to 2.5 L at 300 K against a pressure of 1.9 atm. Calculate the work done in L and and joules .

A certain gas undergoes constant temperature expansion from 264 mL to 971 mL . Calculate the work done in joules) by the gas if it expands (i) against a vaccum and (ii) against a constant pressure of 4 atm. Strategy : Use to calculate the work done by the gas on the surrounding, i.e., w = - P Delta V where P is the oppsoing external atmospheric pressure and Delta V , the change in volume, is given by V_(f) - V_(i) , Also, convert the initial and final volumes in liters.