The concentration of H+ ions in a solution with a pH value of 4 is how many times as great as the concentration of H+ ions in a solution with a pH value of 7 ?

Question

BlackTom AI · Accepted Answer

The question compares the hydrogen ion concentration between two solutions with different pH values. Since pH is the negative logarithm (base 10) of the H+ concentration, each unit change in pH represents a tenfold change in [H+].

First, identify the pH difference: 7 − 4 = 3 units. A difference of 3 pH units corresponds to a factor of 10^3 in H+ concentration.

Therefore, the solution with pH 4 has 10^3, or 1000, times more H+ ions than the solution with pH 7.

If there were multiple-choice options, the correct option would be the one indicating 1000 as the ratio of [H+] between the two solutions. The reasoning relies on the definition of pH and the logarithmic relationship to hydrogen ion concentration, where each unit decrease in pH increases [H+] by a factor of 10, and a three-unit decrease yields a 1000-fold increase.

Note: Since the answer options are not provided in the data, this analysis focuses on the fundamental concept and the numeric result that 1000 is the correct ratio between the two concentrations.

AP Environmental Science-Hendricks-T2-2025 APES Unit 7 Exam MC

The concentration of H+ ions in a solution with a pH value of 4 is how many times as great as the concentration of H+ ions in a solution with a pH value of 7 ?

View Explanation

Log in for full answers

Similar Questions

Rainwater near a coal-fired power station has a pH of 3.7. Normal rainwater has a pH of 5.5.How many times greater is the concentration of H⁺ ions in the polluted rainwater compared to normal rainwater?

Rainwater near a coal-fired power station has a pH of 3.7. Normal rainwater has a pH of 5.5.How many times greater is the concentration of H⁺ ions in the polluted rainwater compared to normal rainwater?

Solution 1 has a pH of 6.4, Solution 2 has a pH of 8.1, and Solution 3 has a pH of 4.8. Which solution has the highest concentration of hydrogen ions ( H + H + )?

pH

A student measures the pH of two solutions. Solution A has a pH of 4, and Solution B has a pH of 6. Based on this information, which of the following statements is correct?

Every increase of one pH unit indicates ______________.

The hydrogen ion concentration, [H+] in a solution with pH 10 is ________ than the [H+] in a solution with pH 13.

The arrow in the diagram right represents the approximate pH of which of the following?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler