Which of the following will show a negative deviation from Raoult’s law
Options
(a) Acetone-benzene (b) Acetone-ethanol (c) Benzene-methanol (d) Acetone-chloroform
Correct Answer:
Acetone-chloroform
Explanation:
Hydrogen bonds are formed on mixing acetone and […]
How many grams of dibasic acid (mol.wt.200) should be present in 100 mL. of an aqueous solution to give decinormal strength
Options
(a) 1 g (b) 10 g (c) 2 g (d) 20 g
The normality of solution containing 31.5 g of hydrated oxalic acid (H₂C₂O₄.2H₂O) in 1250 mL of solution is
Options
(a) 0.8 N (b) 0.2 N (c) 0.4 N (d) 0.1 N
Correct Answer:
0.4 […]
By increasing the temperature , the vapour pressure of a substance
Options
(a) always increases (b) does not depend on temperature (c) always decreases (d) partially depends on temperature
Correct Answer:
always increases
Which of the following 0.10 m aq solution will have the lowest freezing point
Options
(a) Al₂(SO₄)₃ (b) C₆H₁₂O₆ (c) C₁₂H₂₂O₁₁ (d) None of these
Correct Answer:
Al₂(SO₄)₃
Explanation:
No explanation available. […]
20 g of a non-volatile solute is added to 500 g of solvent. Freezing point of solvent = 5.48⁰ C and solution = 4.47⁰ C . Kf = 1.93⁰ C/m. Molecular mass of the solute […]
Which of the following gases has the lowest value of Henry’s law constant
Options
(a) N₂ (b) He (c) H₂ (d) CO₂
Correct Answer:
CO₂
Explanation:
No explanation available. Be the first to […]
Negative deviation from Raoult’s law is observed in which one of the following binary liquid mixtures
Options
(a) Ethanol and acetone (b) Benzene and toluene (c) Acetone and chloroform (d) Chloroethane and bromoethane
The van’t Hoff factor for a solute that associates in solution is
Options
(a) zero (b) 1 (c) less than 1 (d) more than 1
Correct Answer:
less than 1
Explanation:
Since the […]
5 mL of N HCl, 20 mL of N/2 H₂SO₄ and 30 mL of N/3 HNO₃ are mixed together and volume made to one litre . The normality of the resulting solution is
Options […]
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