Date | November Example question | Marks available | 2 | Reference code | EXN.1.SL.TZ0.5 |
Level | Standard Level | Paper | Paper 1 | Time zone | Time zone 0 |
Command term | Write down | Question number | 5 | Adapted from | N/A |
Question
The of a solution is given by the formula where is the hydrogen ion concentration in a solution, measured in moles per litre ().
Find the value for a solution in which the hydrogen ion concentration is .
Write an expression for in terms of .
Find the hydrogen ion concentration in a solution with . Give your answer in the form where and is an integer.
Markscheme
* This sample question was produced by experienced DP mathematics senior examiners to aid teachers in preparing for external assessment in the new MAA course. There may be minor differences in formatting compared to formal exam papers.
(M1)A1
[2 marks]
(M1)A1
Note: Award M1 for an exponential equation with as the base.
[2 marks]
(M1)
A1
[2 marks]