HARD
11th ICSE
IMPORTANT
Earn 100

For the reaction, 2NO(g)  N2(g)+O2(g); ΔH=-ve; K=2.5×1020 at 298 K. What will happen to concentration of N2 temperature is decreased to 273 K?

Important Questions on Equilibrium

HARD
11th ICSE
IMPORTANT

For the reaction, 2NO(g)  N2(g)+O2(g); ΔH=-ve; K=2.5×1020 at 298 K. What will happen to concentration of N2 if pressure is reduced also explain your answer?

HARD
11th ICSE
IMPORTANT
Calculate degree of hydrolysis and pH of 0.25 M NaCN solution at 25°C. Ka = 4.8×10-10
HARD
11th ICSE
IMPORTANT
Show that the degree of hydrolysis of a salt of weak acid and weak base is independent of concentration of the salt.
EASY
11th ICSE
IMPORTANT

Hydrolysis of sucrose give

Sucrose+H2O Glucose+Fructose

Equilibrium constant Kc for the reaction is 2×1013 at 300 K. Calculate G° at 300 K.

(log 2=0.3010) 

MEDIUM
11th ICSE
IMPORTANT

The concentration of hydrogen in two samples of soft drinks A and B are 4.0 × 10-7 and 3.2 × 10-6 respectively. Which of these two soft drinks has higher pH?

HARD
11th ICSE
IMPORTANT
The solubility of Sr(OH)2 at 298 K is 19.23 g/L of solution. Calculate the concentrations of strontium and hydroxyl ions and the pH of the solution.
HARD
11th ICSE
IMPORTANT
Explain solubility product and common ion effect? Discuss their applications in qualitative analysis.
HARD
11th ICSE
IMPORTANT

50 mL 0.04 M calcium nitrate solution is added to 150 mL of 0.08 M ammonium sulphate. Will a precipitate of calcium sulphate form or not?

Ksp =0.4× 10-5