Question

10.7 gram silver obtained during the circulation of electric of 5 ampere up to 30 minutes in silver nitrate pot find out if electrochemical equivalent of silver is chemical equivalent of hydrogen is 0.00001 036 then what will be the equivalent weight of silver

Answer 1

.AccordingtoFaraday'slawofelectrolysis,astrictproportion-alityexistsbetweenthequantityofelectricitypassingthroughanelectrolyteandtheelectrochemicalreactionproducedbyit.Thelat-termaythereforeserveforthemeasurementofquantityofelectricity.Wecalltheinstrumentsemployedforthispurpose'"voltameters"or"coulometers."Agoodmanydifferenttypesofcoulometershavebeenused;forexample,thegascoulometer,inwhichthevolumeoftheliberatedgasesismeasured,ortheiodineandtheironcoulometers,inwhichtheelectrochemicalchangeismeasuredbytitration.Theusualmethod,however,isthedeterminationofthemassofasubstancedepositedatoneoftheelectrodesbyanelectriccurrent."Ofthelastthecoppercoulometerandthesilvercoulometerarethebest-knowntypes.TheinvestigationsofF.andW.Kohlrausch,*RayleighandSidg-wick,^Gray,^SchusterandCrossley,^andGlazebrookandSkinner,^haveprovedthatthesilvercoulometerisbyfarthemostreliableinstrumentofthissortandthatitwillgiveresultsaccurateto1in5,000ifcertainspecificationsastoitsconstructionandtreatmentarecloselyfollowed.«AdescriptionofsomeunusualtypesisgivenbyDanneel:ZS.f.Electroch.,4,p.154;1897.^Fr.andW.Kohlrausch:Wied.Ann.,27,p.1;1886.cKayleighandSidgwick:Phil.Trans.,175,p.Ill;1884.^Gray:Phil.Mag.,22,p.389;1886.eSchusterandCrossley:Proc.Roy.Soc,50,p.344;1892./GlazebrookandSkinner:Phil.Trans.,183,p.567;1892.