Question
Key Stage 3 Science - Chemistry Question 78 of 100 The pH of a solution is low if the concentration of hydrogen ions is __ . What one word completes the sentence? square
Answer
4.2
(180 Votes)
Albie
Master · Tutor for 5 years
Answer
High.
Explanation
The pH value of a solution is a measure of its acidity or basicity/alkalinity—the lower the pH, the greater the acidity, and the higher the pH, the greater the basicity. A lower pH signifies that a solution has a high concentration of hydrogen ions (H⁺). Dichotomously, a high concentration of hydroxide ions (OH⁻) implies a higher pH, assuming a prominent basicity level within the solution. So if the pH is low, the concentration of hydrogen ions is High ultimately. So, the word "high" aptly completes this sentence.