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In two samples of water A and B, A has pH value of 6.5 and B has pH value of 8.5 respectively. Sample B is ___times more acidic than sample A.
- a)8
- b)9
- c)10
- d)1
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
In two samples of water A and B, A has pH value of 6.5 and B has pH v...
PH = - log10 [H+]
- log10 [H+] = pH
[H+]A = 10-6.5
and pH of sample B = 14 – pOH
= 14 – 8.5 = 5.5
Most Upvoted Answer
In two samples of water A and B, A has pH value of 6.5 and B has pH v...
Explanation:
The pH scale is a measure of the acidity or basicity of a solution. It ranges from 0 to 14, where a pH value below 7 indicates acidity, a value of 7 indicates neutrality, and a value above 7 indicates basicity.
Given that water A has a pH value of 6.5 and water B has a pH value of 8.5, we can determine the difference in acidity between the two samples.
Understanding pH values:
- A pH value of 6.5 is slightly acidic.
- A pH value of 8.5 is slightly basic.
Calculating the difference:
To determine the difference in acidity between the two samples, we need to compare their pH values.
The difference in pH values between two samples can be calculated using the following formula:
Difference in pH = pH value of sample B - pH value of sample A
In this case, the difference in pH is:
Difference in pH = 8.5 - 6.5 = 2
Converting pH difference to acidity factor:
The pH scale is logarithmic, which means that a one-unit decrease in pH represents a tenfold increase in acidity. So, a difference of 2 in pH values represents a tenfold increase in acidity.
Hence, sample B is 10 times more acidic than sample A.
Therefore, the correct answer is option 'C' - 10.
The pH scale is a measure of the acidity or basicity of a solution. It ranges from 0 to 14, where a pH value below 7 indicates acidity, a value of 7 indicates neutrality, and a value above 7 indicates basicity.
Given that water A has a pH value of 6.5 and water B has a pH value of 8.5, we can determine the difference in acidity between the two samples.
Understanding pH values:
- A pH value of 6.5 is slightly acidic.
- A pH value of 8.5 is slightly basic.
Calculating the difference:
To determine the difference in acidity between the two samples, we need to compare their pH values.
The difference in pH values between two samples can be calculated using the following formula:
Difference in pH = pH value of sample B - pH value of sample A
In this case, the difference in pH is:
Difference in pH = 8.5 - 6.5 = 2
Converting pH difference to acidity factor:
The pH scale is logarithmic, which means that a one-unit decrease in pH represents a tenfold increase in acidity. So, a difference of 2 in pH values represents a tenfold increase in acidity.
Hence, sample B is 10 times more acidic than sample A.
Therefore, the correct answer is option 'C' - 10.
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