A student starts with a beaker containing a solution of sodium hydroxide. They gradually add an excess of dilute hydrochloric acid while monitoring the pH.
Which of the following is the most likely change in pH during the experiment?
from 141414 to 111
from 111 to 141414
from 141414 to 777
from 777 to 111
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.