Skip to content

Course home

4.1 Acids

4.1 Acids

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207
Question 80

Solutions A and B are two different acid solutions of the same concentration in mol dm−3\text{mol dm}^{-3}mol dm−3. Solution A has a pH of 5.25 and solution B has a pH of 4.25. What is the concentration of hydrogen ions in solution B compared with that in solution A?

A

ten times lower

B

ten times higher

C

higher by a factor of 5.25/4.255.25/4.255.25/4.25

D

lower by a factor of 4.25/5.254.25/5.254.25/5.25

Markscheme

4.1 Acids Questions

  1. GCSE
  2. /Chemistry
  3. /4.1 Acids

276 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank