Home
Class 12
CHEMISTRY
A sample of hydrogen was collected over ...

A sample of hydrogen was collected over water at `21^(@)C` and 685mm Hg. The volume of the container was 7.80 L. Calculate the mass of `H_(2)(g)` collected (vapour pressure of water = 18.6 mm Hg at `21^(@)C`)

A

0.283 g

B

0.570g

C

0.589 g

D

7.14g

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

50 "cm"^3 of hydrogen is collected over water at 17^@C and 750 mm Hg pressure. Calculate the volume of dry gas at S.T.P. The water vapour pressure at 17^@C is 14 mm Hg.

2 g of a gas collected over water at 20^(@)C and under a pressure of 770mm Hg occupied 800ml. Calculate the volume of dry gas at S.T.P. condition. Vapour pressure of water at 20^(@)C is 15mm Hg.

A sample of O_(2) is collected over water at 22^(@)C and 748 torr pessure. The volume of the gas collected is 82.0 cm^(3) . How many grams of oxygen are present in the gas?. The vapour pressure of water at 22^(@)C is 19.8 torr.

750 mL of nitrogen are collected over water at 25^@C and 740 mm pressure. If the aqueous tension at this temperature is 23.8 mm Hg, calculate the mass of the dry gas.

Exactly 100 mL of oxygen is collected over water of 23^(@)C and 800 mm pressure. Calculate the volume of dry oxygen at NTP . (Vapour pressure of water at 23^(@)C is 21 mm .)

Oxygen gas generated by the decomposition of potassium chlorate is collected. The volume of oxygen collected at 24^(@)C and atmospheric pressure of 760 m m Hg is 128 mL . Calculate the mass ( in grams ) of oxygen gas obtained. The pressure of water vapour at 24^(@)C is 22.4 m m Hg .

87cm^3 of moist nitrogen is measured at 9^@C and 659 mm Hg pressure. Find the volume of dry nitrogen at S.T.P. The vapour pressure of water at 9^@C is 9 mm Hg.

A solution is prepared by dissolving 10g of non-volatile solute in 200g of water. It has a vapour pressure of 31.84 mm Hg at 308 K. Calculate the molar mass of the solute. (Vapour pressure of pure water at 308K =32 mm Hg)

0.2325 g of an organic compound was analysed for nitrogen by Duma's method. 31.7 mL of moist nitrogen gas was collected at 25^(@)C and 755.8 mm Hg pressure. Determine the percentage of nitrogen in the compound. The aqueous tension of water is 23.8 mm Hg at 25^(@)C .

A sample of O_(2) gas is collected over water at 23^(@)C at a barometric pressure of 751 mm Hg (vapour pressure of water at 23^(@)C is 21 mm Hg). The partical pressure of O_(2) gas in the sample collected is