TS EAMCET 10-Sep-2020 Shift 1 Solved Paper

Given, root mean square (rms) speed of O2 is 500m/s at a constant temperature.
Root mean square speed in given by the following expression
urms=√‌

3RT

Mw

For H2 gas, urms(H2)=√‌

3RT

MwH2

(Mw of H2=2g/mol)
For O2 gas, urms(O2)=√‌

3RT

MwO2

(Mw of O2=32g/mol)
(Temperature constant, R=8.33JK−1mol−1 )
=2000m/s
Average kinetic energy of H2 can be calculate as
=‌

1

2

mu2
=‌

1

2

×0.002×(2000)2
=‌

1

2

×‌

2

1000

×2000×2000
=4000Jmol−1 or 4kJmol−1