Stoichiometry The combustion equations of carbon and carbon monoxide are as follows: C + O₂ = CO₂, ΔH = - 394 kJ/kg . mole CO + 1/2 O₂ = CO₂, ΔH = - 284.5 kJ/kg. mole. The heat of formation of CO is __________ kJ/kg. mole. +109.5 -109.5 +180 +100 +109.5 -109.5 +180 +100 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Enthalpy of formation of NH₃ is - 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH₃ → N₂ + 3H₂, is equal to __________ kJ/kg. mole. -92 92 -23 46 -92 92 -23 46 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 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 XB.PvB PvB XB.Patm (Patm - Pvw)xB XB.PvB PvB XB.Patm (Patm - Pvw)xB ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In the reaction, represented by Na₂CO₃ + HC₁ → NaHO₃ + NaCl, the equivalent weight of Na₂CO₃ is 5.3 106 53 10.6 5.3 106 53 10.6 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry NaOH contains __________ percent oxygen. 10 1 16 40 10 1 16 40 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation Decreases with increasing pressure Increases with pressure rise Becomes zero at the critical point Both B & C Decreases with increasing pressure Increases with pressure rise Becomes zero at the critical point Both B & C ANSWER DOWNLOAD EXAMIANS APP
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