Stoichiometry 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour? 20 15 10 5 20 15 10 5 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The osmotic pressure of a solution is directly proportional to the Molecular concentration of the solute All of these Absolute temperature of a given concentration Lowering of vapor pressure Molecular concentration of the solute All of these Absolute temperature of a given concentration Lowering of vapor pressure ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 80 kg of Na₂SO₄ (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na₂SO₄ .10H₂O crystals separate out. The weight fraction of Na₂SO₄ in the remaining solution is 0.24 1 0.18 0.24 1 0.18 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The equilibria relations in a multicom-ponent and multiphase system can not be calculated with the help of the Theoretical equations Emperical equations Experimental data Phase rule Theoretical equations Emperical equations Experimental data Phase rule ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Addition of a non-volatile solute to a pure solvent Decreases its freezing point Both B and C Increases its freezing point Increases its boiling point Decreases its freezing point Both B and C Increases its freezing point Increases its boiling point ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Hess's law of constant heat summation is based on conservation of mass. It deals with Reaction rate Changes in heat of reaction None of these Equilibrium constant Reaction rate Changes in heat of reaction None of these Equilibrium constant ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS