CLASS 12 : CHEMISTRY : CHAPTER II :NUMERICALS: SOLUTIONS AND COLLIGATIVE PROPERTIES

CHAPTER II : SOLUTIONS AND COLLIGATIVE PROPERTIES(NUMERICALS)

1)   Calculate the mass percentage of benzene and carbon tertrachloride if 22g of benzene is dissolved in 122g of carbon tetrachloride                                                                              2M

2)   Calculate mole fraction of HCl in solution of HCl containing 24.8% of HCl                                                                                        2M

3)   Calculate mole fraction of solute in its 2 molal aqueous solution                                                                                      2M

4)   Battery acid is 4.22M aqueous H₂SO₄ solution, and has density of 1.21g cm^-3. What is the molality of H₂SO₄? (H=1, S=32,         O=16)                                                                                        2M

5)   Calculate the molarity of 30ml of 0.5M H₂SO₄ diluted to 500ml                                                                                         2M

6)   Calculate the molarity of a solution containing 9.8 g of H₂SO₄ in 250 cm³ of the solution.                                                                   2M

7)   Aqueous solution of NaOH is marked 10% (w/w). The density of solution is 1.070g cm^-3. Calculate Molarity, Molality and mole fraction of NaOH and water (Na=23, H=1,O=16)                   4M

8)   Calculate the mole fraction, Molaltiy and Molarity of HNO₃ in a solution containing 12.2% HNO₃. Given density of HNO₃ = 1.038g cm^-3 (H=1, N=14, O=16)                                                           4M