Stoichiometry The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of Solution Formation Combustion Fusion Solution Formation Combustion Fusion ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times. 10 1000 10000 100 10 1000 10000 100 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity?Vapour pressure of water at 20°C is 17.5 mm Hg. 80.38 80 79.62 78.51 80.38 80 79.62 78.51 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Addition of a non-volatile solute to a solvent produces a __________ in its solvent. Boiling point depression Freezing point elevation Vapor pressure lowering All of these Boiling point depression Freezing point elevation Vapor pressure lowering All of these ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pick out the wrong unit conversion. 1 atm. = 760 mm Hg = 29.92 inch Hg = 14.7 psi = 1.013 bar = 1.013 kgf/cm² 1 kPa = 100 bar None of these 1 mm Hg = 1 torr = 133.3 Pa 1 atm. = 760 mm Hg = 29.92 inch Hg = 14.7 psi = 1.013 bar = 1.013 kgf/cm² 1 kPa = 100 bar None of these 1 mm Hg = 1 torr = 133.3 Pa ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following ideal gas laws are not applicable to mixture of gases ? None of these Dalton's law Amgat's law Boyle's law & Charle's Law None of these Dalton's law Amgat's law Boyle's law & Charle's Law ANSWER DOWNLOAD EXAMIANS APP
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