Chemistry Practice Problems Identifying Acids and Bases Practice Problems Solution: Which of the following solutions is the most acidi...

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Solution: Which of the following solutions is the most acidic?(a) 0.2 M LiOH(b) 0.2 M HI(c) 1.0 M methanol (CH3OH)

Problem

Which of the following solutions is the most acidic?

(a) 0.2 M LiOH

(b) 0.2 M HI

(c) 1.0 M methanol (CH3OH)

Solution

We’re being asked to identify which of the solutions is the most acidic.


Strong acids are considered strong electrolytes. They completely dissociate into ions when dissolved in water.


Strong binary acids – paired with a highly electronegative atom

Common strong binary acids are:             HCl, HBr, and HI


Strong oxyacids (or oxoacids) - have 2 or more oxygens than hydrogens

Common strong oxyacids are:                 HNO3, HClO3, HClO4, H2SO4

Exceptions to the rule are:                       Oxalic acid (H2C2O4and Iodic acid (HIO3)

▪ both have 2 more O than H but are weak acids because carbon and iodine have low electronegativity


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Additional Practice Problems

Identifying Acids and Bases

Identifying Acids and Bases

Q. Which is the stronger acid, NH4 + or HBrO?

Solved • Mon Nov 05 2018 14:01:35 GMT-0500 (EST)