Home
Class 11
PHYSICS
A vessel contains 14 g (7 moles ) of hyd...

A vessel contains `14` g (`7` moles ) of hydrogen and `96` g (`3`moles) of oxygen at `STP`. Chemical reaction is induced by passing electric spark in the vessel till one of the gases is consumed. The temperature is brought back to it's starting value `273 K` .The pressure in the vessel is-

A

0.1 atm

B

0.2 atm

C

0.3 atm

D

0.4 atm

Text Solution

Verified by Experts

The correct Answer is:
A
If electric spark is passed, hydrogen reacts with oxygen to form water `(H_2O)`.
Each gram of hydrogen reacts with eight grams of oxygen.
The gas left in the vessel will be 2 gm of hydrogen i.e. no. of moles ` = 2/2 = 1`
(`:. 96/9 = 12 gm` consumed hydrogen)
Initial no. of moles = 7 + 3 = 10 moles.
`:. p_2/p_1 = n_2/n_1 rArr P_2 = 1/10 = 0.1 atm`.
Promotional Banner

Similar Questions

Explore conceptually related problems

A Vessel contains 14g of hydrogen and 96g if oxygen at STP. (a) Find the colume of the vessel. (b) Chemical reaction is induced bu passing electric spark in the vessel till one of the gases is consumed, The temperature is brought back to its starting value 273K. Find the pressure in the vessel.

A vessel contains 14 g of H_(2) and 96g of O_(2) at STP Calculate (a) The volume of vessel (b) the pressure in the vessel when chemical reaction is induced in the vessel by passing electric spark till one of the gas is consumed The temperature brought back to 273 K Neglect the volume of water formed .

A vessel contains one mole of oxygen and one mole of hydrogen at N.T.P. What is the ratio of the values of rms velocities of hydrogen and oxygen molecules?

A vessel of volume V contains n_(1) moles of oxygen and n_(2) moles of carbon dioxide at temperature T . Assuming the gases to be ideal, find, (a) the pressure of the mixture, (b) the mean molar mass of the mixture.

A vessel contains 1.60g of oxygen and 2.80g of nitrogen. The temperature is maintained at 300K and the voume of the vessel is 0.166m^(3) . Find the pressure of the mixture.

A vessel of volume 1660 cm^(3) contains 0.1 "mole" of oxygen and 0.2 "mole" of nitrogen. If the temperature of the mixture is 300 K , find its pressure.

A vessel contains 1 mole of O_(2) gas (molar mass 32 ) at a temperature T . The pressure of the gas is P . An identical vessel containing one mole of He gas (molar mass 4 ) at a temperature 2T has a pressure of xP . Find the value of x.

0.1 mole of argon has pressure P and temperature 7K in the vessel. On keeping the vessel at 50^(@)C higher temperature, 0.8g of argon was given out to maintain same pressure. The original temperature was: [Ar=40]

A vessel containing 1 g of oxygen at a pressure of 10 atm a temperature of 47^(@)C . It is found that because of a leak, the pressure drops to 5//8th of its original value and the temperature falls to 27^(@)C . Find the volume of the vessel and the mass of oxygen that is leaked out.