Question

rank acids and bases from stringest to weakest and explain why?

1.acid

NH4Cl, HCl,HNO3,HC2H3O2, Al(NO3)3, H3PO4, Na2H2PO4

2. bases

Na2HPO4,NaOH, NaHCO3, NH3, Na3PO4

Answer 1

1)

acids : strongest to weakest.

HCl > HNO3 > H3PO4 > NH4Cl > Al(NO3)3 > Na2H2PO4.

1) here HCl and HNO3 are strong acids. becuse these gives more H+ ions when dissolve in water . H3PO4 is weak acid . it does not dissociate completely when dissolve in water.

2) NH4Cl and Al(NO3)3 are salt of stong acid and weak bases. so these are acidic .

3) Na2H2PO4. is basic . so this is less acidic

2)

bases :

NaOH > NH3 > Na3PO4 > Na2HPO4 > NaHCO3

NaOH is strong base and NH3 is weak base.

in Na2HPO4 NaHCO3, Na3PO4 , more Na ions compound is more basic.