MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Molarity

380 mL of a g...

Question

$380$ mL of a gas at $27^{0} C$ , $800 m m$ of Hg weight
$0.455$ g. the mol.wt.of gas is:

A

27

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

28

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

29

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

30

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $27$
volume of 1 mole of gas = 22400 ml
no. of moles in 380 ml of gas = $\frac{380}{22400}$ = 0.0169

no. of moles = $\frac{g i v e n m a s s}{m o l e c u l a r m a s s}$
hence, the molecular mass = $\frac{0.455}{0.0169}$ = 27 g

Suggest Corrections

thumbs-up

0

Similar questions

Q. It was found that 380 mL of a gas at 27 and 800 mm of Hg weighed 0.455 g. Find the molecular weight of the gas.

Q. 0.157 g of a certain gas collected over water occupied a volume of 135 ml at

27^{0} C

and 750 mm of Hg. Assuming ideal behaviour, the molecular weight of the gas is (aqueous tension at

27^{0} C

is 26.7 mm of Hg)

0.157

g of a certain gas collected over water occupies a volume of

135 m l

27^{0} C

750 m m

of Hg. Assuming ideal behaviour , the molecular weight of the gas is:

(aqueous tension at

27^{0} C

26.7 m m

H g

Q. 0.157 g of a certain gas collected over water occupied a volume of 135 ml at

27^{0} C

and 750 mm of Hg. Assuming ideal behaviour, the molecular weight of the gas is (aqueous tension at

27^{0} C

is 26.7 mm of Hg)

Q. At N.T.P. the volume of a gas is found to be 273 ml. What will be the volume of this gas at 600 mm Hg and

273^{\circ}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Reactions in Solutions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon