In an automated industrial wastewater treatment facility, acidic runoff containing dilute sulfuric acid is neutralised by the continuous addition of a calcium hydroxide suspension. To prevent environmental damage, the facility's digital control system must monitor the acidity of the effluent constantly in real time.
State the specific instrument that should be installed in the neutralising tank to obtain a continuous, digital measurement of the pH.
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 100 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.