Oxygen and Its Compounds
CHXI11:THE P-BLOCK ELEMENTS

316802 Starch paper moistened with solution of KI turns to blue in ozone because

1 Alkali is formed
2 Iodine is liberated
3 Ozone reacts with litmus paper
4 Oxygen is liberated
CHXI11:THE P-BLOCK ELEMENTS

316803 Ozone is thermodynamically less stable than oxygen
(A) Its decomposition into oxygen results in the liberation of heat
(B) Increase in entropy
(C) Large negative Gibbs free energy change for its conversion into oxygen.
The correct reason is/are

1 A, B, C
2 A, B
3 A, C
4 B,C
CHXI11:THE P-BLOCK ELEMENTS

316804 Statement A :
Decomposition of ozone into oxygen results in the liberation of heat and an increase in entropy.
Statement B :
Ozone is thermodynamically unstable.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316805 Estimation of ozone can be made quantitatively by:

1 Oxidative ozonolysis method
2 Decomposition into \(\mathrm{O}_{2}\) and absorption of \(\mathrm{O}_{2}\) into pyrogallol
3 Volumetric method using KI and titration of liberated iodine using hypo solution
4 All methods given above
CHXI11:THE P-BLOCK ELEMENTS

316802 Starch paper moistened with solution of KI turns to blue in ozone because

1 Alkali is formed
2 Iodine is liberated
3 Ozone reacts with litmus paper
4 Oxygen is liberated
CHXI11:THE P-BLOCK ELEMENTS

316803 Ozone is thermodynamically less stable than oxygen
(A) Its decomposition into oxygen results in the liberation of heat
(B) Increase in entropy
(C) Large negative Gibbs free energy change for its conversion into oxygen.
The correct reason is/are

1 A, B, C
2 A, B
3 A, C
4 B,C
CHXI11:THE P-BLOCK ELEMENTS

316804 Statement A :
Decomposition of ozone into oxygen results in the liberation of heat and an increase in entropy.
Statement B :
Ozone is thermodynamically unstable.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316805 Estimation of ozone can be made quantitatively by:

1 Oxidative ozonolysis method
2 Decomposition into \(\mathrm{O}_{2}\) and absorption of \(\mathrm{O}_{2}\) into pyrogallol
3 Volumetric method using KI and titration of liberated iodine using hypo solution
4 All methods given above
CHXI11:THE P-BLOCK ELEMENTS

316802 Starch paper moistened with solution of KI turns to blue in ozone because

1 Alkali is formed
2 Iodine is liberated
3 Ozone reacts with litmus paper
4 Oxygen is liberated
CHXI11:THE P-BLOCK ELEMENTS

316803 Ozone is thermodynamically less stable than oxygen
(A) Its decomposition into oxygen results in the liberation of heat
(B) Increase in entropy
(C) Large negative Gibbs free energy change for its conversion into oxygen.
The correct reason is/are

1 A, B, C
2 A, B
3 A, C
4 B,C
CHXI11:THE P-BLOCK ELEMENTS

316804 Statement A :
Decomposition of ozone into oxygen results in the liberation of heat and an increase in entropy.
Statement B :
Ozone is thermodynamically unstable.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316805 Estimation of ozone can be made quantitatively by:

1 Oxidative ozonolysis method
2 Decomposition into \(\mathrm{O}_{2}\) and absorption of \(\mathrm{O}_{2}\) into pyrogallol
3 Volumetric method using KI and titration of liberated iodine using hypo solution
4 All methods given above
CHXI11:THE P-BLOCK ELEMENTS

316802 Starch paper moistened with solution of KI turns to blue in ozone because

1 Alkali is formed
2 Iodine is liberated
3 Ozone reacts with litmus paper
4 Oxygen is liberated
CHXI11:THE P-BLOCK ELEMENTS

316803 Ozone is thermodynamically less stable than oxygen
(A) Its decomposition into oxygen results in the liberation of heat
(B) Increase in entropy
(C) Large negative Gibbs free energy change for its conversion into oxygen.
The correct reason is/are

1 A, B, C
2 A, B
3 A, C
4 B,C
CHXI11:THE P-BLOCK ELEMENTS

316804 Statement A :
Decomposition of ozone into oxygen results in the liberation of heat and an increase in entropy.
Statement B :
Ozone is thermodynamically unstable.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316805 Estimation of ozone can be made quantitatively by:

1 Oxidative ozonolysis method
2 Decomposition into \(\mathrm{O}_{2}\) and absorption of \(\mathrm{O}_{2}\) into pyrogallol
3 Volumetric method using KI and titration of liberated iodine using hypo solution
4 All methods given above