Chemical Equilibrium Set 2

Results

#1. A large value of Kc means that at equilibrium

less reactants and more products

more reactants and less product

same amount

none

#2. The PH of 10–3 mole dm–3 of an aqueous solution of H2SO4 is

3.0

2.7

2.0

1.5

#3. The solubility product of AgCl is 2.0 x 10–10 mole2 dm–6. The max concentration of Ag+ ions in the solution is

2.0 x 10–10 mol dm–3

1.41 x 10–5 mol dm–3

1.0 x 10–10 mol dm–3

4.0 x 10–20 mol dm–3

#4. An excess of aqueous silver nitrate to added to aqueous barium chloride and precipitate is removed by filtration what are the main ions in the filtrate

Ag+ and NO only

Ag+ and Ba2+ and NO3

Ba2+ and NO only

Ba+2 and NO and Cl–

#5. For N2 + 3H2 2NH3

Kc = Kp

Kp = Kc RT

Kp = Kc (RT)–2

Kp = Kc (RT)–1

#6. H2 + I2 2HI In the above equilibrium system, if the conc. of reactants of 25oC is increased, the value of Kc will

increase

decrease

remains constant

depends upon nature of reactants

#7. In a chemical reaction, equilibrium is said to have established when

opposing reactions stops

concentrations of reactants and products are equal

rate constants of opposing reactions are equal

none

#8. The relation between Kc and Kp is

Kc = Kp (RT) Dn

Kp = Kc (RT) Dn

Kp = Kc

#9. The precipitation occurs if the ionic concentration is

less than Ksp

more than Ksp

equal to Ksp

is present at any moment

#10. The PH of oranges is

3.5

3.1

4.6

4.2

Finish