Question

The ratio of most probable velocity of Hydrogen to Oxygen at 20°C is:
(A) 1:4
(B) 4:1
(C) 2:3
(D) 3:2
A
B.
С
D​

Answer 1

Answer:

THE answer is

Explanation:

(A)1:4 like the answer

Answer 2

Given:

Temperature = 20°C

To find:

The ratio of most probable velocity of Hydrogen to Oxygen

Calculation:

Most probable velocity is given by the formula

       $V_{mp}=\sqrt{\frac{2RT}{M} }$

      Where T is temperature

                  M is molecular weight

Most probable velocity of Hydrogen

   $V_{mp(H)}=\sqrt{\frac{2RT}{1} }$      ……(1)

Most probable velocity of Oxygen

   $V_{mp(O)}=\sqrt{\frac{2RT}{16} }$      ……(2)

By dividing equations (1) & (2)

    $\frac{V_{mp(H)}}{V_{mp(O)}} =\frac{\sqrt{\frac{2RT}{1} } }{\sqrt{\frac{2RT}{16}} }$

               $=\sqrt{\frac{16}{1} }$

               $=\frac{4}{1}$

Final answer:

The ratio of most probable velocity of Hydrogen to Oxygen is Option(B) 4:1