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Table 3:
Solution
PH value using a
pH values using strips
Conclusion: Acid or base
PH meter
from part 1
DI water
5.96
Neutral
Neutral
Unknown A
2.71
Acid
Acid
Unknown B
2.53
Acid
Acid
Lemon Juice
2.51
Acid
Acid
Vinegar
2.56
Acid
Acid
10% Bleach
10.86
Combination of Acid and
Base
Base
Question:
1. Unknown solutions A and B are 0.1 M solutions of either HCI or NaOH. According to your pH
measurements, which is which?
2. The pH of pure water is 7. Comment on how closely your measured pH values of water from
each measurement method compared to the expected value.
3. Which method was more appropriate for measuring the pH of the bleach solution?

Top Answer

1.Since the measure of both pHs were acid (pHA=2.71 and pHB=2.53) both solutions correspond to a solution... View the full answer

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