Calculate the concentration of cyanide (CN–) in a 0.450 M solution of hydrocyanic acid HCN and 0.10M –10 HCl. [For HCN,...

Question

Question

Calculate the concentration of cyanide (CN–) in a 0.450 M solution of hydrocyanic acid HCN and 0.10M –10 HCl. [For HCN, Ka = 6.2 × 10]

a. 0.1M b. 2.8×10–9M c. 7.8×10–5M d. 1.1×10–6M e. 0.21 M

with steps please

Answer 1

Answer #1

solution - HON dont form a Ha and buffer in aqueous solution so HON - Htt CNO ka = 6.2 x 10t0 = (ht] [ CN ] Chen] from [HEN]

Answer 2

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