At $298 K$ and $1 a t m$ pressure a gas mixture contains equal masses of $H e, H_{2}, O_{2}$ and $N H_{3}$ . Which of the following is correct for their average molecular velocities?

H e > H_{2} > N H_{3} > O_{2}

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H e < H_{2} < O_{2} < N H_{3}

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H_{2} < H e < N H_{3} < O_{2}

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O_{2} < N H_{3} < H e < H_{2}

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Solution

The correct option is D $O_{2} < N H_{3} < H e < H_{2}$
Molecular velocities $\propto \frac{1}{Mass of gases}$
$∴$ Order of their molecular velocities will be
$O_{2} < N H_{3} < H e < H_{2}$ .

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Similar questions

Q. Calculate the molecular masses of

H_{2}, O_{2}, {CO}_{2}, {NH}_{3} .

Calculate the molecular masses of $H_{2}, O_{2}, C O_{2}, N H_{3}, C H_{3} O H .$ [5 MARKS]

Q. Gases

H_{2} H e O_{2} N_{2}

Critical temperature(K) 33.2 5.3 154.3 126

From the above data what whould be the order of liquefaction of these gases?
Start writing the order from the gas liquefying first.

Gases posses charcteristic critical temperature which depends upo the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.

$\begin{matrix} G a s e s & H_{2} & H e & O_{2} & N_{2} C r i t i c a l t e m p e r a t u r e i n K e l v i n & 33.2 & 5.3 & 154.3 & 126 \end{matrix}$

From the above data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first

(a) $H_{2}, H e, O_{2}, N_{2}$ (b) $H e, O_{2}, H_{2}, N_{2}$

Question 1
Calculate the molecular masses of $H_{2}, O_{2}, C l_{2}, C O_{2}, C H_{4}, C_{2} H_{6}, C_{2} H_{4}, N H_{3}, C H_{3} O H$ .

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At 298 K and 1 atm pressure a gas mixture contains equal masses of He,H2,O2 and NH3. Which of the following is correct for their average molecular velocities?

The correct option is D O2<NH3<He<H2Molecular velocities ∝1Mass of gases∴ Order of their molecular velocities will beO2<NH3<He<H2.

At $298 K$ and $1 a t m$ pressure a gas mixture contains equal masses of $H e, H_{2}, O_{2}$ and $N H_{3}$ . Which of the following is correct for their average molecular velocities?

The correct option is D $O_{2} < N H_{3} < H e < H_{2}$
Molecular velocities $\propto \frac{1}{Mass of gases}$
$∴$ Order of their molecular velocities will be
$O_{2} < N H_{3} < H e < H_{2}$ .