In an environmental study of a freshwater ecosystem, a limnologist measures the pH of a lake. At the beginning of the year, the water has a pH of 6.0. Following runoff from a nearby industrial site, the pH of the lake water drops to 2.0.
State how many times greater the concentration of hydrogen ions is in the lake water of pH 2.0 than in the lake water of pH 6.0.
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 276 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
