Stoichiometry Questions

• A very dilute solution is prepared by dissolving 'x1' mole of solute in 'x2' mole of a solvent. The mole fraction of solute is approximately equal to
• Gases having same reduced temperatures and reduced pressures
• The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour
• Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is
• Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is
• Gases diffuse faster compared to liquids because of the reason that the liquid molecules
• If pH value of a solution is 8, then its pOH value will be
• Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the
• Vapor pressure of water at 100°C is about __________ bar.
• Solutions which distil without change in composition are called
• N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (molecular weight of urea = 60)
• Density of carbon dioxide is __________ kg/Nm3.
• Kopp's rule is concerned with the calculation of
• In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the
• The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of
• Heat of solution in a system in which both solute and solvent are liquids is termed as
• The evaporation of aqueous solution of sugar causes its molarity to
• One micron is equal to
• Pick out the wrong statement.
• CaCO3 contains __________ percent of Ca by weight.