Acid–alkali indicators

1 mark · Normal

Which pH value below would be classified as weakly alkaline?

ApH 12BpH 9CpH 7DpH 3

› Show answer

Correct option: pH 9

Common mistakes: Selecting pH 12 or pH 7

› Show mark scheme and worked solution

Marking points

A1 · 1 mark · pH 9 is correct (weakly alkaline)

Worked solution

Weakly alkaline solutions have pH 8–10, so pH 9 is correct.

← Previous Next question →

Report a problem with this question

What's wrong? The question looks wrong The expected answer looks wrong The marking scheme looks wrong The wording is unclear A diagram or image has a problem It's not from this part of the syllabus Something else

Tell us more (optional)

Want SubjectCover to remember your results?

Save your history, get your answers evaluated, track syllabus coverage and see what to practise next.

During Early Access, answer evaluation and explanations are currently free, subject to fair-use limits.

Create Free Account Sign in

SubjectCover

SubjectCover is an independent assessment and practice platform and is not affiliated with or endorsed by Pearson.

Pearson and Edexcel are trademarks of their respective owners.

Free practice Privacy Terms Contact