Gas Laws

Q.

Calculate the number of $\mathrm{P}$ atoms in one mole of ${\mathrm{P}}_4$?

Q.

How many molecules of water are there in 36g water

Q. 'X' L N₂ gas at STP contains 3*10²² molecules. The number of molecules in X L ozone at STP will be:

Q.

Stete (i) the three variables for gas laws (ii) S.I. units of these variables.

Q. What is the connection between Gay-Lussac's law and Avogadro's law???

Q.

Which of the following statement(s) is/ are true ?

1. At constant temperature, pressure is inversely proportional to volume.

2. At constant temperature, pressure is directly proportional to volume.

3. At constant pressure, volume is inversely proportional to temperature.

4. At constant pressure, volume is directly proportional to temperature.

Q. How to calculate the value of b or excluded volume that is given as 4VNo in the Van Der Waals equation for 1 mole. V = volume of a single molecule of a real gas No = Avogadros number.

Q. Gay Lussac’s law defines the relationship between the ___ and ___ of a gas, keeping the value of ____ fixed.

T: Temperature
V: Volume
P: Pressure

1. T, V, P
2. P, T, V
3. P, V, T
4. None of these

Q. Express molality in terms of mole fraction and also express mole fraction in terms of molality ?give the origin of two equation briefly

Q. The average atomic mass of a mixture containing 79 mole percent of ${}^{24}\text{Mg}$ and remaining 21 mole percent of ${}^{25}\text{Mg}$ and ${}^{26}\text{Mg}$, is 24.31. Mole percent of ${}^{26}\text{Mg}$ is :

1. 5
2. 20
3. 10
4. 15

Q.

The gas law giving the relation between the volume and temperature of the gas is______.

Q.

One gram mole of a gas at STP occupies 22.4L volume. This fact was derived from –

1. Daltion’s theory

2. Avogadro’s hypothesis

3. Berzelius hypothesis

4. None of the above

Q. The relationship $\frac{\left(PV\right)}{T}=$ constant, represents:

1. Boyle’s law
2. Charle’s law
3. Gay Lussac’s law
4. Combined gas equation

Q. Match the parameter that is kept constant in the respective laws.

1. Temperature
2. Volume
3. Pressure