Advertisements
Advertisements
Question
800 cm3 of gas is collected at 654 mm pressure. At what pressure would the volume of the gas reduce by 40% of its original volume, the temperature remaining constant?
Advertisements
Solution
Given: V = 800 cm3
P = 654 mm
P1= ?
V1 = reduced volume = 40% of 800
= `(800 xx 40)/100`
= 320
Net V1 = 800 − 320
= 480 cm3
T = T1
Using the gas equation,
`(PV)/T = (P_1 V_1)/T_1`
`(800 xx 654)/T = (P_1 xx 480)/T_1`
Since T = T1
P1 = `(800 xx 654)/480`
= 1090 mm of Hg.
APPEARS IN
RELATED QUESTIONS
A cylinder contains 68 g of ammonia gas at STP.
1) What is the volume occupied by this gas?
2) How many moles of ammonia are present in the cylinder?
3) How many molecules of ammonia are present in the cylinder?
[N = 14, H = 1]
What is the value of molar volume of a gas at STP?
A flask contains 3.2g of sulphur dioxide. Calculate the following : The volume occupied by 3.2g of sulphur dioxide at STP.
Calculate the volume of 320g of SO2 at STP .
(Atomic mass : S = 32 and O = 16)
60 cm3 of oxygen was added to 24 cm3 of carbon monoxide and mixture ignited. Calculate the volume of oxygen used up.
What volume of hydrogen and oxygen measured at S.T.P. will be required to prepare 1.8 g of water?
From the equation:
\[\ce{C + 2H2SO4 -> CO2 + 2H2O + 2SO2}\]
Calculate the volume of sulphur dioxide measured at STP, liberated at the same time.
A gas is to be filled from a tank of capacity 10,000 litres into cylinders each having capacity of 10 litres. The condition of the gas in the tank is as follows:
- The pressure inside the tank is 800 mm of Hg.
- The temperature inside the tank is −3°C.
When the cylinder is filled, the pressure gauge reads 400 mm of Hg and the temperature is 270 K. Find the number of cylinders required to fill the gas.
Which will have greater volume when the following gases are compared at STP:
- 1.2/N2 at 25°C and 748 mmHg
- 1.25/O2 at STP
From the equation
\[\ce{3Cu + 8HNO3 -> 3Cu(NO3)2 + 4H2O + 2NO}\]
(Atomic mass Cu = 64, H = 1, N = 14, O = 16)
Calculate the volume of nitric oxide at STP that can be collected.
