# Chapter 4 Stoichiometry: Quantitative Information about Chemical Reactions - 4-6 pH, a Concentration Scale for Acids and Bases - Review & Check for Section 4-6 - Page 164: 1

A

#### Work Step by Step

Pure water has a pH of 7, NaOH is a base and has a pH bigger than 7, $HNO_3$ at that concentration has a pH between 4 and 5, HCl at that concentration has a pH of 1.

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