StoichiometryMole–Mass Stoichiometry16Choose the best answerIn the reaction: CH₄ + 2O₂ → CO₂ + 2H₂O what mass of CO₂ is produced when 0.5 mol O₂ reacts with excess CH₄?A44 gB22 gC11 gD5.5 g Like 0 Discuss 0Share
StoichiometryMole Concept and Avogadro Constant17Choose the best answerOne mole of C₂H₆ and one mole of C₂H₅OH contain equal:ANumbers of moleculesBNumbers of atomsCNumbers of electronsDMasses Like 0 Discuss 0Share
StoichiometryAvogadro's Law18Choose the best answerWhich pair contains equal numbers of molecules?A1 g H₂ and 44 g CO₂B1 dm³ O₂ and 1 dm³ N₂ at the same temperature and pressureC1 mol H₂ and 0.5 mol HeDAll of these Like 0 Discuss 0Share
StoichiometryMolar Volume at STP19Choose the best answerThe conventional molar volume of 22.4 dm³ mol⁻¹ corresponds to:A0°C and 1 atmB273°C and 1 atmC0°C and 273 atmD273 K and 273 atm Like 0 Discuss 0Share
StoichiometryGas Volume Stoichiometry20Choose the best answer100 mL each of C₂H₂ and O₂ are ignited at the same temperature and pressure: 2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O Assuming H₂O remains as vapour, the final gaseous mixture contains:A10 mL C₂H₂, 50 mL O₂, 40 mL CO₂ and 20 mL H₂OB5 mL O₂, 30 mL CO₂ and 15 mL H₂OC20 mL C₂H₂, 80 mL CO₂ and 40 mL H₂OD60 mL C₂H₂, 80 mL CO₂ and 40 mL H₂O Like 0 Discuss 0Share