Write a charge balance for a solution ofH 2 SO 4 in water if theH 2 SO 4 ionizes

Question

Write a charge balance for a solution ofH2SO4 in water if theH2SO4 ionizes toHSO4- and SO42- . Solution given by teacher: Write ions formed From H2SO4:   HSO4,SO42-, H+ From H2O: H+, OH- So our charge balance equation is [H+]=[HSO4-]+2[SO42-]+[OH-] So I know that you have the (+) charges on one side and thenegative charges on the other and when you have a superscriptwhatever the superscript is has to be multipled by thatcharge. What I dont understand is why is there only one [H+]in the solution when there is an H+ given off fromthe  H2SO4 and one from thewater. Also how did he get the ions formed fromthe  H2SO4? Write a charge balance for a solution ofH2SO4 in water if theH2SO4 ionizes toHSO4- and SO42- . Solution given by teacher: Write ions formed From H2SO4:   HSO4,SO42-, H+ From H2O: H+, OH- So our charge balance equation is [H+]=[HSO4-]+2[SO42-]+[OH-] So I know that you have the (+) charges on one side and thenegative charges on the other and when you have a superscriptwhatever the superscript is has to be multipled by thatcharge. What I dont understand is why is there only one [H+]in the solution when there is an H+ given off fromthe  H2SO4 and one from thewater. Also how did he get the ions formed fromthe  H2SO4? So our charge balance equation is [H+]=[HSO4-]+2[SO42-]+[OH-] So I know that you have the (+) charges on one side and thenegative charges on the other and when you have a superscriptwhatever the superscript is has to be multipled by thatcharge. What I dont understand is why is there only one [H+]in the solution when there is an H+ given off fromthe  H2SO4 and one from thewater. Also how did he get the ions formed fromthe  H2SO4?

Explanation / Answer

     We generally define Acid is a specieswhich ionises in water to give H+ ions.         The ionisation ofH2SO4 in the presence of the water takesplace in two steps :           H2SO4 <--------> H+ (aq) + HSO4- (aq)             HSO4- (aq) <-------> H+ (aq) + SO4-2 (aq)           Addingthe both the equations :          H2SO4 (aq) <---------> 2H+ (aq) + SO4-2 (aq)           Addingthe both the equations :          H2SO4 (aq) <---------> 2H+ (aq) + SO4-2 (aq)

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