Question

has a mixture of hydrogen and oxygen gases in the ratio 1:5. the ratio of mean kinetic energy
A jar' has a mixture
hydrogen and oxygen molecule is
(1) 1 : 16
(3) 1:5
(2) 1:4
(4) 1:1​

Answer 1

Answer:

the answer is 1 ratio 5 only

Answer 2

The ratio of mean kinetic energy is 1:5

(3) is correct option.

Explanation:

Given that,

The ratio of mixture = 1:5

In the mixture, the mass of hydrogen is 1 and mass of oxygen is 5.

We need to calculate the kinetic energy

Using formula of kinetic energy

For hydrogen,

$K.E_{hyd}=\dfrac{1}{2}mv^2$

Put the value into the formula

$K.E_{hyd}=\dfrac{1}{2}M\times\dfrac{3RT}{2}$....(I)

For oxygen,

$K.E_{oxy}=\dfrac{1}{2}5M\times\dfrac{3RT}{2}$...(II)

We need to calculate the ratio of mean kinetic energy

Divided equation (I) by (II)

$\dfrac{K.E_{hyd}}{K.E_{oxy}}=\dfrac{\dfrac{1}{2}M\times\dfrac{3RT}{2}}{\dfrac{1}{2}5M\times\dfrac{3RT}{2}}$

$\dfrac{K.E_{hyd}}{K.E_{oxy}}=\dfrac{1}{5}$

Hence, The ratio of mean kinetic energy is 1:5.

Learn more :

Topic : kinetic energy

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