Products

Holooly Rewards

We are determined to provide the latest solutions related to all subjects FREE of charge!

Please sign up to our reward program to support us in return and take advantage of the incredible listed offers.

Enjoy Limited offers, deals & Discounts by signing up to Holooly Rewards Program

Holooly Ads. Manager

Advertise your business, and reach millions of students around the world.

Holooly Tables

All the data tables that you may search for.

Holooly Arabia

For Arabic Users, find a teacher/tutor in your City or country in the Middle East.

Holooly Sources

Find the Source, Textbook, Solution Manual that you are looking for in 1 click.

Holooly Help Desk

Need Help? We got you covered.

Chapter 2

Q. 2.4

Predicting acid Strengths from p K_{ a } Values

Water has p K_{ a } = 15.74, and acetylene has p K_{ a } = 25. Which is the stronger acid? Does hydroxide ion react with acetylene?

S t r a t e g y
In comparing two acids, the one with the lower pK_{a} is stronger. Thus, water is a stronger acid than acetylene and gives up H^{+} more easily.

Step-by-Step

Verified Solution

Because water is a stronger acid and gives up H^{+} more easily than acetylene does, the HO^{-}ion must have less affinity for H^{+} than the HC=C:^{-} ion has. In other words, the anion of acetylene is a stronger base than hydroxide ion, and the reaction will not proceed as written.