A 1l solution contains 0.2 m nh4oh and 0.2m nh4cl.if 1ml of 0.001m hcl is added to it.what will be the conc. of oh- of the resulting solution .(kb=2*10^-5)
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A solution contains 0.2M NH4OH and 0.2M NH4Cl. If 1.0 mL of 0.001 M HCl is added to it. What will be the [OH−] of the resulting solution [Kb=2×10−5]?
A
2×10−5
B
5×10−10
C
2×10−3
D
None of these
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Correct option is
A
2×10−5
Concentration oF NH4OH=0.2M
Concentration of NH4Cl=0.2M
Concentration OF HCl=0.001M
Kb=2×10−5
Applying Henderson Equation
POH=PKa+log[basesalt]
POH=5−log2+log0.20.2
=
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