Q.

Which of the following solutions will be definitely basic?

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a

Equal masses of same % w/w NaOH and HCl solutions are mixed.

b

Different volumes of 0.2 M NaOH and 0.1 M HCl solutions are mixed.

c

400 mL of 0.1 M NaOH is mixed with 100 mL of 0.4 M CH3COOH.

d

Equal volumes of same % w/v of NaOH and H2SO4 solutions are mixed.

answer is A, B.

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Detailed Solution

Question Image

Salt of weak acid and strong base formed
 basic
ii) M=WV%10MA=x×1040 for NaOH
M=x×1098 for H2SO4nfMVNaOH>nfMVH2SO4  basic 
iii) If volume of NaOH< Volume of HCl2 then basic
iv) 40 gram NaOH means 1 mole NaOH and 40 gram HCI means 4036.5>1
 

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