Advertisements
Advertisements
Question
What is the value of molar volume of a gas at STP?
Solution
The value of molar volume of a gas at STP is 22.4 dm3(litre) or 22400 cm3(ml).
Concept Insight : One mole of any gaseous molecules occupy 22.4 dm3 at standard temperature and pressure(STP). This volume is known as molar volume.
APPEARS IN
RELATED QUESTIONS
The mass of 11.2 litres of a certain gas at s.t.p. is 24 g. Find the gram molecular mass of the gas
Copper sulphate solution reacts with sodium hydroxide solution to form a precipitate of copper hydroxide according to the equation :
2 NaOH +CuSO4 Na2SO Cu (OH)2
What is the colour of the precipitate formed?
(NH4)2Cr2O7 → N2 + Cr2O3 +4H2O.
What volume of nitrogen at STP, will be evolved when 63g of ammonium dichromate is decomposed?
(H= 1, N = 14, 0 = 16, Cr = 52)
Solve the following:
The vapour density of a gas is 8. What would be the volume occupied by 24.0 of the gas at STP?
A cylinder contains 68g of ammonia gas at STP
- What is the volume occupied by this gas?
- How many moles of ammonia are present in the cylinder?
- How many molecules of ammonia are present in the cylinder? [N - 14, H - 1]
Give a chemical test to distinguish between the following pair of compounds:
Carbon dioxide gas and sulphur dioxide gas
Calculate the mass and volume of oxygen at S.T.P., which will be evolved on electrolysis of 1 mole (18 g) of water.
800 cm3 of gas is collected at 650 mm pressure. At what pressure would the volume of the gas reduce by 40% of its original volume, the temperature remaining constant?
Write the values of:
standard pressure in:
(i) atm
(ii) mm Hg
(iii) cm Hg
(iv) torr
Water decomposes to O2 and H2 under suitable conditions as represented by the equation below:
\[\ce{2H2O -> 2H2 + O2}\]
The 2500 cm3 of H2 is subjected to `2 1/2` times increase in pressure (temp. remaining constant). What volume will H2 now occupy?
