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State which of the following solutions are weak electrolytes - `dil. HCI`, `carbonic acid` , `NH_(4) OH, `dil.H_(2) SO_(4)` , AGNO_(3) , Na_(2)CO_(3), PbBr_(2), KOH, HI , `oxalic acid`, NAHCO_(3)` , sodium acetate , `Na_(2) SO_(4) , NaOH`

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Which one of the following solutions with same concentrations will have lowest pH? NaHCO_(3) HCl KOH Na_(2)CO_(3)

Sulphurc acid NH_(4)OH+H_(2)SO_(4) to______+______

Sulphuric acid [conc.] NH_(3)+H_(2)SO_(4) to_____

Which of the following react with dil H_(2)SO_(4) ?

Na_(2)S+H_(2)SO_(4)("Conc.")to S darr+SO_(2)+Na_(2)SO_(4)

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Na_(3)PO_(4)+Fe_(2)(SO_(4))_(3) to FePO_(4) darr+Na_(2)SO_(4)

BaSO_(4) darr+Na_(2)CO_(3) to BaCO_(3)darr+Na_(2)SO_(4)

BaSO_(4) darr+Na_(2)CO_(3) to BaCO_(3)darr+Na_(2)SO_(4)

Na_(2)C_(2)O_(4)+H_(2)SO_(4)(Conc.) to Na_(2)SO_(4)+CO+CO_(2)

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