1.

5 mL of 0.4N NaOH is mixed with 20 mL of 0.1N HCl. The pH of the resulting solution will be :

Answer»

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5

Solution :`{:(NaOH,+,HCL rarr NaCl+H_(2)O),(5mL,,20ML),(0.4N,,0.1N):}`
Moles of `NaOH=(0.4)/(1000)xx5=2xx10^(-3)` moles
Moles of `HCl = (0.1)/(1000)xx20=2xx10^(-3)` moles
As the moles of NaOH and HCl are EQUAL, the resulting solution will be NEUTRAL.


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