IB Mathematics Applications and Interpretation Quiz
19 questions · no time limit
0:00
Finish quiz
NUMBER AND ALGEBRA
Question 1
of 19
Flag for review
No time limit
Current
Answered
Flagged
Not seen
PASSAGE
The pH of a solution is defined as
p
H
=
−
log
10
[
H
+
]
pH = -\log_{10}[H^+]
p
H
=
−
lo
g
10
[
H
+
]
, where
[
H
+
]
[H^+]
[
H
+
]
is the concentration of hydrogen ions in moles per litre.
A sample of lemon juice has a pH of 2.4. What is the concentration of hydrogen ions,
[
H
+
]
[H^+]
[
H
+
]
, in the lemon juice?
A
1.58
×
10
−
3
1.58 \times 10^{-3}
1.58
×
1
0
−
3
mol/L
B
3.98
×
10
−
3
3.98 \times 10^{-3}
3.98
×
1
0
−
3
mol/L
C
2.40
×
10
−
2
2.40 \times 10^{-2}
2.40
×
1
0
−
2
mol/L
D
2.51
×
10
2
2.51 \times 10^{2}
2.51
×
1
0
2
mol/L
YOUR PROGRESS
19
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
KEYBOARD
Pick an answer
A
B
C
D
Next question
↵
→
Previous
←
Flag for review
F