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Author Question: The acid-dissociation constant of hydrocyanic acid (HCN) at 25.0 C is 4.9 10-10. What is the pH of ... (Read 83 times)

Engineer

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on: Jul 8, 2021

Question 1

The acid-dissociation constant at 25.0 °C for hypochlorous acid (HClO) is 3.0 × 10-8. At equilibrium, the molarity of H3O+ in a 0.010 mol L-1 aqueous solution of HClO is:
◦ 1.7 × 10-5
◦ 0.010
◦ 5.8 × 10-10
◦ 4.76
◦ 2.00

Question 2

The acid-dissociation constant of hydrocyanic acid (HCN) at 25.0 °C is 4.9 × 10-10. What is the pH of an aqueous solution of 0.080 mol L-1 sodium cyanide (NaCN)?
◦ 11.11
◦ 2.89
◦ 1.3 × 10-3
◦ 7.8 × 10-12
◦ 3.9 × 10-11
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by Engineer on Jul 8, 2021

cici

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Reply #1 on: Jul 8, 2021
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Engineer

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Reply 2 on: Jul 8, 2021
Excellent

amit

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Reply 3 on: Yesterday
Gracias!

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