A solution is tested with the four indicator solutions shown in the attached colour chart. The following results are obtained: Thymol blue turns yellow. Methyl orange turns yellow. Methyl red turns orange. • Bromothymol blue turns yellow. What is the estimated pH of the solution? Thymol blue red 1,2- 2,8 yellow 8,0 - 9,6 blue Methyl orange red 3,0 - 4,6 yellow Methyl red red 4,2 - 6,3 yellow Bromothymol blue yellow 6.0 - 7.8 blue 1 6 7 8 9. 10 11 12 pH А. 4.3

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A solution is tested with the four
indicator solutions shown in the
attached colour chart. The following
results are obtained:
Thymol blue turns yellow.
Methyl orange turns yellow.
Methyl red turns orange.
• Bromothymol blue turns yellow.
What is the estimated pH of the
solution?
Thymol blue
red
1,2 - 2,8
yellow
8.0-9,6
blue
Methyl orange
red
3,0 - 4,6
yellow
Methyl red
red
4,2 - 6,3
yellow
Bromothymol blue
yellow
6,0 - 7,8
blue
2
3
4
10
11
12
pH
A. 4.3
В. 8.0
C. 5.3
D. 2.8
Transcribed Image Text:A solution is tested with the four indicator solutions shown in the attached colour chart. The following results are obtained: Thymol blue turns yellow. Methyl orange turns yellow. Methyl red turns orange. • Bromothymol blue turns yellow. What is the estimated pH of the solution? Thymol blue red 1,2 - 2,8 yellow 8.0-9,6 blue Methyl orange red 3,0 - 4,6 yellow Methyl red red 4,2 - 6,3 yellow Bromothymol blue yellow 6,0 - 7,8 blue 2 3 4 10 11 12 pH A. 4.3 В. 8.0 C. 5.3 D. 2.8
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