CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

0.1 Mole Of CH3NH2 (Kb=5x10-4) is mixed with 0.08 Mole of HCl and diluted to one Litre. What will be the H+ Concentration In the solution?


Open in App
Solution

The reaction occurring is :
CH3NH2+HClCH3NH2+Cl-0.10.0800.0200.08(0.1-0.08)

The reaction mixture contains unreacted methylamine(CH3NH2) and hydrochloride salt(HCl).

Thus, it is a basic buffer solution.

The expression for the hydroxide ion concentration is[OH-] = kb×BaseConjugateacid
Substitute values in the above expression= 5×10-4×0.020.08=1.25×10-4

But H+OH-=kW=10-14

H+1.25×10-4=10-14H+=10-141.25×10-4=8×10-11

0.1 Mole Of CH3NH2 (Kb=5x10-4) is mixed with 0.08 Mole of HCl and diluted to one Litre. The H+ Concentration In the solution is 8x10-11


flag
Suggest Corrections
thumbs-up
2
BNAT
mid-banner-image