Chemistry, asked by aragrawalgmail8507, 23 days ago

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)

Answers

Answered by rupajaiswal0085
0

Answer:

Question

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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Solution

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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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