Which of these has the lowest pH?

Lemon juiceCorrect answerYour answerMilkCorrect answerYour answerPure waterCorrect answerYour answerSoap solutionCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

The lower the pH, the more acidic the liquid.
Lemon juice is about pH 2, milk about 6.5, pure water 7 and soap solution about 10.

Worth noting

Soap solution is basic, so it has the highest pH of the four, not the lowest.

Ten questions from Everyday Chemistry, at your own pace.

Ten questions from Everyday Chemistry, at your own pace.

Explanation