Kerala Board Solutions for Chapter: Gas Laws and Mole Concept, Exercise 2: Let us assess

Author:Kerala Board

Kerala Board Chemistry Solutions for Exercise - Kerala Board Solutions for Chapter: Gas Laws and Mole Concept, Exercise 2: Let us assess

Attempt the practice questions on Chapter 2: Gas Laws and Mole Concept, Exercise 2: Let us assess with hints and solutions to strengthen your understanding. Chemistry Standard X Part 1 solutions are prepared by Experienced Embibe Experts.

Questions from Kerala Board Solutions for Chapter: Gas Laws and Mole Concept, Exercise 2: Let us assess with Hints & Solutions

MEDIUM
10th Kerala Board
IMPORTANT

Examine the data given in the table (Temperature and number of molecules of the gas are kept constant).

Pressure (P) Volume (V)
1 atm 8 L
2 atm 4 L
4 atm 2 L

a) Calculate P×V.

b) Which is the gas law related to this.

MEDIUM
10th Kerala Board
IMPORTANT

Analyse the situations given below and explain the gas law associated with it. 
a) A balloon is being inflated. 

b) When an inflated balloon is immersed in water, its size decreases.

MEDIUM
10th Kerala Board
IMPORTANT

Certain data regarding various gases kept under the same conditions of temperature and pressure are given below.

Gas Volume (L) Number of molecules
Nitrogen 10 L x
Oxygen 5 L  
Ammonia 10 L  
Carbon dioxide   2 x

a) Complete the table.

b) Which gas law is applicable here?

HARD
10th Kerala Board
IMPORTANT

How many grams of carbon and oxygen are required to get the same number of atoms as in one gram of Helium?

HARD
10th Kerala Board
IMPORTANT

Examine the samples given.

a. 20 g He           b. 44.8 L of NH3 at STP

c. 67.2 L N2 at STP          d. 1 mole of H2SO4        e. 180 g of water.

i) Arrange the samples in the increasing order of the number of molecules in each. 
ii) What will be the ascending order of the number of atoms? 
iii) What will be the mass of samples b, c, and d? 

HARD
10th Kerala Board
IMPORTANT

How many molecules are present in 90 gram of water?

HARD
10th Kerala Board
IMPORTANT

What will be the total number of atoms present in 90 g of water?

MEDIUM
10th Kerala Board
IMPORTANT

What will be total number of electrons in the 90 g of water?