1. For the reaction PCL ⇌ PCl3 + Clc (i) Write the expression of Kc

1.	1. For the reaction PCL ⇌ PCl3 + Clc (i) Write the expression of Kc . (ii) What happens if pressure is increased? 2. Write the conjugate acid and base of the following species: (i) H2O (ii) HCO3. Name the phenomenon involved in the preparation of soap by adding NaCI.
Answer» 1. (i) K_c = \(\frac{[PC_3][Cl_2]}{[PCl_5]}\) (ii) If we increase the pressure the system will try to decrease the pressure. For this system will proceed in the direction where there is minimum number of moles, i.e., rate of backward reaction increases by decreasing the pressure. 2.(i) Conjugate acid of H₂O is H₃O⁺ Conjugate base of H₂O is OH” (ii) Conjugate acid of HCO,” is H₂CO₃ Conjugate base of HCO^-₃ is CO^2-₃ 3. Common ion effect.

1. For the reaction PCL ⇌ PCl3 + Clc (i) Write the expression of Kc . (ii) What happens if pressure is increased? 2. Write the conjugate acid and base of the following species: (i) H2O (ii) HCO3. Name the phenomenon involved in the preparation of soap by adding NaCI.

Answer»

1. (i) K_c = \(\frac{[PC_3][Cl_2]}{[PCl_5]}\)

(ii) If we increase the pressure the system will try to decrease the pressure. For this system will proceed in the direction where there is minimum number of moles, i.e., rate of backward reaction increases by decreasing the pressure.

2.(i) Conjugate acid of H₂O is H₃O⁺

Conjugate base of H₂O is OH”

(ii) Conjugate acid of HCO,” is H₂CO₃ Conjugate base of HCO^-₃ is CO^2-₃

3. Common ion effect.

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1. For the reaction PCL ⇌ PCl3 + Clc (i) Write the expression of Kc . (ii) What happens if pressure is increased? 2. Write the conjugate acid and base of the following species: (i) H2O (ii) HCO3. Name the phenomenon involved in the preparation of soap by adding NaCI.

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