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In which of the following cases, the final solution obtained will definitely be basic?A. 100 ml 0.1 M NaOH solution is mixed with 200 m 0.1 M `H_(2)SO_(4)` solutionB. 50 ml 40% w/v NaOH solution is mixed with 1 litre of 0.5M `H_(2)SO_(4)` solution.C. 200 gm of 40% w/w NaOH solution is mixed wih 1.5 litre of 1 MHCl soluton.D. 200 ml of 0.2 M NaOH solution is mixed with 100 ml of 0.2 M `H_(2)SO_(4)` solution. |
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Answer» Correct Answer - 3 (1) mm of `NaOH=100xx 0.1 =10` mm of `H_(2)SO_(4)=200xx0.1 =20` `2NaOH+H_(2)SO_(4) to Na_(2)SO_(4)+2H_(2)O` 10(LR)`" "` 20 Solution will be acidic `{:((2),2NaOH,+,H_(2)SO_(4) to Na_(2)SO_(4)+2H_(2)),(t=0,"0.5 mole (LR)",,"0.5 mole"):}` Solution will be acidic (3) `{:(NaOH,+,HCl to Na_(2)SO_(4)+2H_(2)O),("2 mole","1.5 mole(LR)"):}` So solution will be basic answer is (3) |
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