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100 mL of 0.5 M hydrazoic acid (N3H, Ka=...

100 mL of 0.5 M hydrazoic acid `(N_3H, K_a=3.6xx10^(-4))` and 400 mL of 0.1 M cyanic acid `(HOCN, K_a=8xx10^(-4))` are mixed .Which of the following is true for final solution ?

A

`[H^(+)]=10^(-2)M`

B

`[N_(3)^(-)]=3.6xx10^(-3)M`

C

`[OCN^(-)]=6.4xx10^(-3)M`

D

`[H^(+)]=1.4xx10^(-2)M`

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a,b,c
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