Question on: JAMB Chemistry - 2019
Hydrogen diffused through a porous plug
A
thrice as fast as oxygen
B
at the same speed as oxygen
C
four times as fast as oxygen
D
twice as fast as oxygen
Ask EduPadi AI for a detailed answer
Correct Option: C
By applying Graham's Law of Diffusion,
\(\frac{R_1}{R_2} = \sqrt{\frac{m_2}{m_1}}\)
\(\frac{R_H}{R_O} = \sqrt{\frac{m_O}{m_H}}\)
\(\frac{R_H}{R_O} = \sqrt{\frac{32}{2}}\)
\(\frac{R_H}{R_O} = \sqrt{16} = 4\)
\(\therefore R_H = 4 \times R_O\)
Therefore, hydrogen diffuses 4 times faster than oxygen.
Graham's law of effusion was formulated by Scottish physical chemist Thomas Graham in 1848. Graham found experimentally that the rate of effusion of a gas is inversely proportional to the square root of the mass of its particles. Wikipedia
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