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3 years ago

What is the pH difference of two samples if the concentration of [H+] ions is 1000-fold less in the second sample?

Chemistry

2 answers:

vodomira [7]3 years ago

7 0

Answer:

The correct answer is A, just answered it on my test!!!!!

Explanation:

snow_tiger [21]3 years ago

4 0

The correct answer is a. This is because the pH of a solution is defined as -log10(concentration of H+ ions). An inverse logarithmic scale such as this means that a solution with a lower concentration of H+ ions will have a higher pH than one with a higher concentration. Therefore we know that the pH of the second sample will be higher than the first.

Since the logarithmic scale has the base 10, a change by 1 on the scale is a consequence of multiplication/division of the H+ concentration by a factor of 10. As the scale is inverse, this means that a decrease of concentration by factor 1000 is equivalent to increasing the pH by (1000/10) = 3.

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