The acid dissociation constant ( K_{a} ) of hydrocyanic acid (HCN) is ( 6.2 imes 10^{-10} ). Calculate the pH of a ( 5.4 M ) solution of hydrocyanic acid. Round your answer to 1 decimal place. pH =
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Step 1
First, we need to understand the dissociation of hydrocyanic acid (HCN). It dissociates in water to form H+ and CN- ions. The equilibrium expression for this reaction is given by: HCN ⇌ H+ + CN- Ka = [H+][CN-]/[HCN] Show more…
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