One brand of vinegar has a pH of 4.5. Another brand has a pH of 5.0. The equation for the pH of a substance is pH = - log[H+], where H + is the concentration of hydrogen ions. What is the approximate difference in the concentration of hydrogen ions between the two brands of vinegar?

A. 2.2 x10^-5

B. 3.2x10^-1

C. 3.2x10^1

D. 6.8x10^4

Question

Chemistry

Maia Rosales

20 July, 11:55

One brand of vinegar has a pH of 4.5. Another brand has a pH of 5.0. The equation for the pH of a substance is pH = - log[H+], where H + is the concentration of hydrogen ions. What is the approximate difference in the concentration of hydrogen ions between the two brands of vinegar?

A. 2.2 x10^-5

B. 3.2x10^-1

C. 3.2x10^1

D. 6.8x10^4

+1

Answers (1)

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Jazz · Answer 1

[H+] in first brand:

4.5 = - log ([H+])

[H+] = 10^ (-4.5)

[H+] in second brand:

5 = - log[H+]

[H+] = 10^ (-5)

Difference = 10^ (-4.5) - 10^ (-5)

= 2.2 x 10⁻⁵

The answer is A.