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 10 5 15 20 10 5 15 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Hess's law of constant heat summation is based on conservation of mass. It deals with None of these Equilibrium constant Reaction rate Changes in heat of reaction None of these Equilibrium constant Reaction rate Changes in heat of reaction ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition. The component molecules are non polar and are of almost equal size The attractive forces between like and unlike molecules are almost equal In the formation of solution, chemical combination/molecular association between unlike molecules takes place No component is concentrated at the surface of the solution The component molecules are non polar and are of almost equal size The attractive forces between like and unlike molecules are almost equal In the formation of solution, chemical combination/molecular association between unlike molecules takes place No component is concentrated at the surface of the solution ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will Increase two times Increase four times None of these Be reduced to l/4th Increase two times Increase four times None of these Be reduced to l/4th ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The most convenient way of expressing solution concentration is in terms of Mole fraction Normality Molarity Molality Mole fraction Normality Molarity Molality ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of Formation Solution Fusion Combustion Formation Solution Fusion Combustion ANSWER DOWNLOAD EXAMIANS APP
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