StoichiometryGas Volume Stoichiometry226Choose 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
StoichiometryMass–Volume Stoichiometry227Choose the best answerWhat volume of O₂ at STP (273 K and 1 atm) is required for complete combustion of 96 g CH₄? CH₄ + 2O₂ → CO₂ + 2H₂OA89.6 dm³B134.4 dm³C268.8 dm³D336.0 dm³ Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept228Choose the best answerHow many moles of Mg are present in 6 g of Mg? (Molar mass of Mg = 24 g mol⁻¹)A0.25 molB0.50 molC1.0 molD4.0 mol Like 23 Discuss 0Share
StoichiometryMole–Mass Stoichiometry229Choose the best answerWhat mass of SO₂ is formed by burning sulfur in 5.0 mol O₂? S + O₂ → SO₂A640 gB320 gC160 gD80 g Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept230Choose the best answerWhich statement about one mole is correct?AOne mole of different substances always has the same massBOne mole is always equal to 22.4 L of any substanceCOne mole of any substance contains the same number of particlesDOne mole always contains 1 gram of substance Like 0 Discuss 0Share