Latent Heat of Fusion Formula - Vedantu

The formula of specific latent heat of fusion is given by: Q = mL, which is the required specific latent heat of the fusion equation. Specific Latent Heat of ... ClaimyourFREESeatinVedantuMasterClasses!RegisternowFreeClassesSigninLatentHeatofFusionFormulaFormulaLatentHeatofFusionFormulaDownloadPDFNCERTSolutionsNCERTSolutionsforClass12NCERTSolutionsforClass11NCERTSolutionsforClass10NCERTSolutionsforClass9NCERTSolutionsforClass8NCERTSolutionsforClass7NCERTSolutionsforClass6NCERTSolutionsforClass5NCERTSolutionsforClass4NCERTSolutionsforClass3NCERTSolutionsforClass2NCERTSolutionsforClass1PopularTextbookSolutionsHCVermaSolutionsRDSharmaSolutionsLakhmirSinghSolutionsDKGoelSolutionsRSAggarwalSolutionsTSGrewalSolutionsSandeepGargSolutionsCBSENCERTBooksCBSEImportantQuestionsCBSERevisionNotesCBSESyllabusCBSESamplePaperPreviousYearQuestionPapersClass12PreviousYearQuestionPapersClass10CBSEImportantFormulasICSEICSESolutionsISC&ICSESyllabusISC&ICSESamplePapersICSERevisionNotesStateBoardsAPBoardBiharBoardGujaratBoardKarnatakaBoardKeralaBoardMaharashtraBoardMPBoardRajasthanBoardTNBoardUPBoardWBBoardCompetitiveExamsJEEMainJEEAdvancedNEETOlympiadImportantConceptsPhysicsBiologyChemistryMathsEnglishCommerceOtherSolvedQuestionsFullFormsQuizPuzzlesIntroductiontoLatentHeatofFusionWeoftenhearsincechildhoodthatablockoficemeltstogivechilledwater;wealsotalkaboutthewaterturningtosteam,whichisusedforrotatingturbinesandgeneratingelectricity.However,wecomeacrossthephenomenonwhenwestudyscience.Thisarticlediscussesthelatentheatoffusionformulas.So,latentheatoffusionistheamountofinnerorlatentheatasolidgains(melting)totransformintoaliquidstateortheliquidstatetogaseous(boiling).(Imagetobeaddedsoon)LatentHeatofFusionMeaningLatentheatmeanstheenergyrequiredtochangeanobject’sstate.Fusionmeanscombination.Overall,latentheatoffusionmeanstheaddedenergyorheatbecauseofwhichanobjectchangestoanotherstate.Here,itisaboutthetransformationofsolidtoliquid,whichismelting,andliquidtoagaseousstate,whichiscalledtheboilingprocess.HeatandTemperatureUnderthechapteronThermodynamics,werepresentaparameterheatbyanEnglishblockletter‘Q’.Weoftenjumbletheword‘heat’with‘temperature’;however,thesetwotermshavehugedifferences.Heatistheeffectofanobjectgeneratingvibrationsinparticlesinsidetheobject.Wealsoconsiderheatastheriseinentropyofparticlesorthekineticenergyoftheseundertheeffectofrisingtemperatures.Temperatureissomethingthatcanbebothhighandlow,whileheatisalwaysrising.Now,whentheheatislatent,forexample,youhaveaninnerheatandwhenyousleep,yourbodyreachestheGibbs’freeenergystatebecausethattimeyourbodylosesheatanditstemperaturefall.LatentHeatofFusionFormulaSo,theformulaoflatentheatoffusionisgivenby:\[\Delta\]Q=mL,whichistherequiredequationforthelatentheatoffusionHere, \[\Delta\]Q=changeinheatenergyinJoulesm=massinKgL=SpecificlatentheatoffusionSo,doyouknowwhatthespecificlatentheatoffusionis?SpecificLatentHeatofFusion Wedefinethespecificlatentheatastheenergyrequiredtotransformorchangethestateof1kgofsubstance.However,thespecificlatentheatoffusionistheenergyneededtomeltakilogramofsubstance. Thereisanothertermcalledthespecificlatentheatofvaporization.Wedefinethespecificlatentheatofvaporizationastheenergyrequiredtoboilorevaporateakilogramofsubstance.SpecificLatentHeatofFusionFormulaTheformulaofspecificlatentheatoffusionisgivenby:Q=mL,whichistherequiredspecificlatentheatofthefusionequation.SpecificLatentHeatofFusionEquationWedefinethespecificlatentheatofthefusionequationinthefollowingmanner:If‘m’kgofsolidsubstancechangestoliquidstateataconstanttemperature,whichisitsmeltingpoint,theheatabsorbedbythesubstanceorthelatentheatoffusionformulaisgivenby:Q=mLWhere,L=specificlatentheatoffusionofsubstancethatismeasuredinJouleperkilogramorJ/kg.LatentHeatofFusionLatentheatoffusionisalsonamedasenthalpyoffusionwhichcanbedefinedastheenergyamountneededtobesuppliedtothesolidsubstancewhichcomesintheformofheatinordertobringachangeinitsoriginalphysicalstateandthenconvertitintoaliquidstate.Intheliquidstate,thepressureoftheenvironmentismaintainedatconstant.Letusunderstandthiswithanexample.Thelatentheatoffusionofwater(1kg)istheamountofheatthatmustbeprovidedtoconvert1KGoficebynotchangingthetemperatureoftheenvironment.ThisiskeptatzerodegreesCelsius.Wemustknowthattheoppositeoflatentheatisthesolidificationheatorheatofsolidificationwhichcanbedefinedastheenergywhichneedstobesuppliedtotheliquidinordertocreatephasechangeandconverttheliquidtosolidform.Thevalueofheatofsolidificationofasubstanceisequaltothemagnitudeofthelatentheatbutisrepresentedbyanoppositesign.Thiscanbeexplainedwithanexample.Theenergyabsorbedbyicetobecomewaterwhichisaliquidphaseisequaltotheamountofenergyproducedbywatertobecomeice.Thelatentheatisalsousedtodescribetheenergyrequiredfortheaccommodationofanyincreaseinthevolumeofthesubstanceafteritchangesitsoriginalstate.Meltingpointisthetemperatureunderwhichthesubstancehasaphasetransitionandthispointoftransitionorthetemperatureisalsoknownasthefreezingpointofthatsubstancewhenfactorslikeheatorsolidificationareconsidered.Unlessitisstatedotherwise,whenweexpressthelatentheatoffusion,weassumethepressureoftheenvironmenttobe1atmosphereofpressurewhichequals101.325kilopascalsapproximately.Tolearnaboutlatentheatoffusion,logintoVedantuandstartlearningfromthenotespreparedbysubjectexperts.Theywillbebeneficialforyouandwillhelpyouunderstandtheconceptsbetter.YoucanalsoclearyourdoubtswithVedantututorsfreeofcost.ConclusionAmattertransformsfromonestatetoanotherbecauseofahiddenheat,whichislatent.Ifenergyisaddedtoriseby1kg,itisthespecificlatentheatoffusion.BotharemeasuredinJ/kg.RecentlyUpdatedPagesTransformerFormula-Efficiency,TurnRatio,StepUpandStepDownRadioactiveDecayFormula-Meaning,Equation,Half-LifeandFAQsElectricalFormulas-Explanation,SolvedExamplesandFAQsHeatLoadFormula-Meaning,Calculation,SolvedExamplesandFAQsPhotonEnergyFormula-Equation,Graph,ApplicationsandFAQsCylindricalCapacitorFormula-Definition.SolvedExampleandFAQsTransformerFormula-Efficiency,TurnRatio,StepUpandStepDownRadioactiveDecayFormula-Meaning,Equation,Half-LifeandFAQsElectricalFormulas-Explanation,SolvedExamplesandFAQsHeatLoadFormula-Meaning,Calculation,SolvedExamplesandFAQsPhotonEnergyFormula-Equation,Graph,ApplicationsandFAQsCylindricalCapacitorFormula-Definition.SolvedExampleandFAQs12TrendingtopicsPowerFormulaAccelerationFormulaDisplacementFormulaTensionFormulaChargeDensityFormulaTransformerFormulaPhysicsFormulasforClass11EnergyConsumptionFormulaImportantGravitationFormulasforJEEPowerFormulaAccelerationFormulaDisplacementFormulaTensionFormulaChargeDensityFormulaTransformerFormulaPhysicsFormulasforClass11EnergyConsumptionFormulaImportantGravitationFormulasforJEE123FAQsonLatentHeatofFusionFormula1.Definespecificheat?Theword‘specificheat’talksaboutanobjectbeingheatedspecificallybyonedegree.So,basically,thespecificheatcapacityofasolidisdefinedastheamountofheatneededtoraisethetemperatureofaunitmassofthesubstancebyonedegree. TheunitformeasuringthespecificheatisJ/kg-°C.2.Whatdoyoumeanbyspecificheatatconstantvolumeandconstantvolume?SpecificHeatatConstantVolumeandConstantPressureareintensivepropertiesdenotedby\[c_{v}\]and\[c_{p}\],respectively;thesepropertiesaredefinedforpure,simple,andcompressiblesubstances.3.Specifylatentheatoffusion?Theenergyneededtoentirelyseparatethemolecules,movingfromliquidtogasismuchgreaterthanifyouwerejusttoreducetheirseparationfromsolidtoliquid.4.Whatisthespecificandmolarheatoffusion?Whenweconsideraunitmassofsubstancethentheenergythatisrequiredtoconvertthesubstanceintoliquidwhenthereisaconstantpressureiscalledthespecificheatoffusionforthesubstancetakenintoconsideration.Ontheotherhand,whenthereisachangeofenthalpyonaper-molebasiscalculationthentheheatoffusioniscalledthemolarheatoffusionofthesubstance.5.Whatisreasonableheat?Reasonableheatisalsoknownaslatentheatwhichisnotasteadycircumstanceanditisnotastagechangeisconsidered.Thisphenomenonreflectstheheatwhichmovesaroundtheitemandtheenvironment.Thisheatcanbeknownastheadjustmentintheitem’stemperature.6.Whatisthelatentheatofvaporization?Thelatentheatofvaporizationisknownasthemeasureofheatwhichisconvertedfor1gramoffluidintoafume.Thisisdonewithoutchangingthefluid’stemperature.Thisdefinitiondidn’toriginatefromWeast(1964)butoriginatedfromWebster’sNewWorldDictionary.ItisexpressedasCal/gramandtheheatofevaporationisknownasthelatentheat.7.Whatistheenthalpyoffusion?Enthalpyoffusionisalsoknownaslatentheatwhenweconsiderthatheatenergyismeanttochangewhenthesubstancechangesfromsolidtofluidatairpressure.Thisisthelatentheatoffusionas,duringtheprocess,thetemperatureremainsconstant.Thisisameasurablequantitywhenasubstancedissolves.Whenweuseitinreferencetoaunitofmassthenitiscalledthespecificheatoffusion.8.CanIgetfreechemistrynotesonvedantu?Yes,youcangetfreenotesonanychemistrysubject.Allyouhavetodoisloginorsign-uptoanyoftheVedantuplatformsandstartlearning.ThenotescomeinPDFformatwhichmakesthemeasiertostudyandalsoactsasareference.Thesenotescoveralltheimportantpointsandformulasthatcanhelpyouwithyourstudies.Thisisfreeofcostandcanbequiteadvantageousforyourstudypreparations.CommentPostCommentNCERTBookSolutionsNCERTNCERTSolutionsNCERTSolutionsforClass12MathsNCERTSolutionsforClass12PhysicsNCERTSolutionsforClass12ChemistryNCERTSolutionsforClass12BiologyNCERTSolutionsforClass11MathsNCERTSolutionsforClass11PhysicsNCERTSolutionsforClass11ChemistryNCERTSolutionsforClass11BiologyNCERTSolutionsforClass10MathsNCERTSolutionsforClass10ScienceNCERTSolutionsforClass9MathsNCERTSolutionsforClass9ScienceReferenceBookSolutionsHCVermaSolutionsRDSharmaSolutionsRDSharmaClass10SolutionsRDSharmaClass9SolutionsRSAggarwalSolutionsRSAggarwalClass10SolutionsICSEClass10solutionsLakmirSinghSolutionsTextBookSolutionsImportantFormulasMathFormulaPhysicsFormulaChemistryFormulaQuestionPapersPreviousYearQuestionPaperCBSEPreviousYearQuestionPaperforClass10CBSEPreviousYearQuestionPaperforClass12SamplePaperCBSEClass12SamplePapersCBSEClass10SamplePapersICSEClass10SamplePapersMathsPhysicsChemistryBiologyPracticeQuestionsExamsIITJEENEETAIIMSKVPYKCETCOMEDKBITSATVITEEEOLYMPIADSTATEBOARDSQuickLinksJEECrashCourseNCERTBooksCBSEBoardCBSESyllabusICSEBoardFreeStudyMaterialsQuestion&AnswersRevisionNotesImportantQuestionsWorksheetsCh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