Chemical KineticsStoichiometric Relationship of Reaction Rates1136Choose the best answerFor the reaction 2A + B → A₂B, the rate of disappearance of A is:AHalf the rate of disappearance of BBEqual to the rate of disappearance of BCTwice the rate of disappearance of BDEqual to the rate of formation of A₂B Like 0 Discuss 0Share
LiquidsBoiling Point and External Pressure1137Choose the best answerFor pure water to boil at 110°C, the external pressure must be:ALess than 760 mmHgBGreater than 760 mmHgCExactly 760 mmHgDZero Like 0 Discuss 0Share
StoichiometryGas Volume and Number of Moles1138Choose the best answerWhich sample contains the minimum number of moles at STP (273 K and 1 atm)?A1 dm³ CH₄B5 dm³ HeC10 dm³ H₂D22.4 dm³ Cl₂ Like 0 Discuss 0Share
MDCAT Chemistry Past PapersIBA MDCAT Chemistry Paper Reconduct 2024#Aldehydes and Ketones#Cannizzaro Reaction1139Choose the best answerIn Cannizzaro's reaction, formaldehyde reacts with: (IBA MDCAT Reconduct 2024)AChloroformBNaOHCWaterDHCl Like 0 Discuss 0Share
Chemical BondingHybridization1140Choose the best answerWhich molecule contains an sp³-hybridized central atom?ACH₄BC₂H₄CCO₂DC₂H₂ Like 0 Discuss 0Share