Aldehydes and KetonesAcetal Formation1136Choose the best answerAldehydes react with excess alcohol in the presence of dry HCl to form:AEthersBAcetalsCEstersDKetals Like 0 Discuss 0Share
Chemical BondingElectronegativity Difference and Bond Type1137Choose the best answerTwo elements have electronegativity values of 1.2 and 3.0. The bond between them is most likely:AIonicBCovalentCCoordinate covalentDMetallic Like 0 Discuss 0Share
ElectrochemistryElectrochemical Series1138Choose the best answerStandard electrode potentials in the electrochemical series are arranged relative to the:ApH scaleBpKa scaleCpOH scaleDHydrogen reference scale Like 0 Discuss 0Share
MDCAT Chemistry Past Paper 2023#First Law of Thermodynamics#Thermochemistry & Thermodynamics1139Choose the best answerWhat is the mathematical statement of the first law of thermodynamics? (MDCAT 2023)AΔE = q + wBΔE = −q − wCΔE = −q + wDΔE = q − w Like 0 Discuss 0Share
ElectrochemistrySalt Bridge1140Choose the best answerIf the salt bridge is removed from a working galvanic cell:ACell operation becomes fasterBThe electrode reactions continue indefinitelyCSustained current quickly stopsDThe electrodes exchange their roles Like 0 Discuss 0Share