NaClO solution reacts with H2SO3 as NaClO + H2SO3 → NaCl + H2SO4. A solution of NaClO used in this reaction contained 15 gm of NaClO per litre. The normality of the solution would be:

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128

Physical Chemistry MCQ with Answers

128) NaClO solution reacts with H₂SO₃ as NaClO + H₂SO₃ → NaCl + H₂SO₄. A solution of NaClO used in this reaction contained 15 gm of NaClO per litre. The normality of the solution would be:

0.22

0.33

0.44

0.55

Answer is:

0.33

Explanation:

N = (w x 1000) ⁄ (Eq. wt. x V(mL))

Physical Chemistry MCQ with Answers

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129) The vapour pressures of pure benzene and toluene are 160 and 60 torr respectively. The mole fraction of toluene in vapour pressure in contant with equimolar solution of benzene and toluene is:

0.6

0.5

0.27

0.74

Answer is:

0.27

130) Van′t Hoff factor for a dilute solution of sodium argento cyanide is:

0.25

0.5

Answer is:

2

131) A solution obtained by dissolving 0.2 gm of solute in 100 cc of solution in benzene at 21^oC develops at a rise of 2 mm of Hg osmotic equilibrium. Find molarity of the solution: (Density of solution = 0.88 gm⁄cc)

8.3 x 10⁻³ mol⁄L

4.15 x 10⁻⁶ mol⁄L

8.3 x 10⁻⁴ mol⁄L

None of these

Answer is:

8.3 x 10⁻³ mol⁄L

132) When mercuric iodide is added to the aqueous solution of potassium iodide, the:

Freezing point is raised

Freezing point does not change

Freezing point is lowered

Boiling point does not change

Answer is:

Freezing point is raised

Explanation:

There is a decrease in number of ions present in the solution, so ΔT_f decreases.

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128) NaClO solution reacts with H2SO3 as NaClO + H2SO3 → NaCl + H2SO4. A solution of NaClO used in this reaction contained 15 gm of NaClO per litre. The normality of the solution would be:

0.33

Physical Chemistry MCQ with Answers

Related Physical Chemistry MCQ with Answers

129) The vapour pressures of pure benzene and toluene are 160 and 60 torr respectively. The mole fraction of toluene in vapour pressure in contant with equimolar solution of benzene and toluene is:

0.27

130) Van′t Hoff factor for a dilute solution of sodium argento cyanide is:

2

131) A solution obtained by dissolving 0.2 gm of solute in 100 cc of solution in benzene at 21oC develops at a rise of 2 mm of Hg osmotic equilibrium. Find molarity of the solution: (Density of solution = 0.88 gm⁄cc)

8.3 x 10−3 mol⁄L

132) When mercuric iodide is added to the aqueous solution of potassium iodide, the:

Freezing point is raised

Physical Chemistry MCQ with Answers

128) NaClO solution reacts with H₂SO₃ as NaClO + H₂SO₃ → NaCl + H₂SO₄. A solution of NaClO used in this reaction contained 15 gm of NaClO per litre. The normality of the solution would be:

131) A solution obtained by dissolving 0.2 gm of solute in 100 cc of solution in benzene at 21^oC develops at a rise of 2 mm of Hg osmotic equilibrium. Find molarity of the solution: (Density of solution = 0.88 gm⁄cc)

8.3 x 10⁻³ mol⁄L