Stoichiometry Questions

• The heat of solution depends upon the
• "The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface". This statement pertaining to the solubility of gases in liquid is the __________ law.
• One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to
• pH value of a solution containing 1 gm of hydrogen ion per litre will be
• 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
• A flowsheet is given in the following figure: If the single pass once through conversion of A to B is 20%, then the rate of recycle R (molds/hr) is
• The temperature at which real gases obey the ideal gas law over a wide range of pressure is called the __________ temperature.
• What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C?
• Claussius Clapeyron equation applies to the __________ process.
• As per Kirchoff s equation, the heat of reaction is affected by the
• pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be
• If 1 Nm3 of O2 contains 'N' number of molecules, then number of molecules in 2Nm3 of SO2 will be
• The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the
• The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal __________ in the two phases.
• For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.
• With increase in temperature, the surface tension of water
• The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.
• Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are pvB and pvw respectively. The partial pressure of benzene in air-vapour mixture is
• The molar composition of a gas is 10% H2, 10% O2, 30% CO2 and balance H2O. If 50% H2O condenses, the final mole percent of H2 in the gas on a dry basis will be
• Degrees of freedom will be equal to the number of components for a system comprising of