apple juice has a ph of 3, stomach acid a ph of 2. Stomach acid is ___ times more acidic than apple juice.?

Answer 1

pH = -log[H+]

pHa = 3 ==> [H+]a = 10-3 apple juice acid
pHs = 2 ==> [H+]s = 10-2 stomach acid

[H+]s/[H+]a = 10-2/10-3 = 10

Stomach acid is ten times more acidic than apple juice.

Answer 2

10 times

Answer 3

pH = -log_10(concentration H+) by definition. If by "acidic" the meaning is the concentration of H+ then the following results:

pH_{apple juice} = 3 = - log_10[H+]_{appple juice}
10^{-3} = [H+]_{apple juice}

pH_{stomach acid} = 2 = -log_10[H+]_{stomach acid}
10^{-2} = [H+]_{stomach acid}

[H+]_{stomach acid} / [H+]_{apple juice} = 10^{-2} / 10^{-3}
[H+]_{stomach acid} / [H+]_{apple juice} = 10
[H+]_{stomach acid} = 10 * [H+]_{apple juice}

Therefore, stomach acid is 10 times the "acidity" of apple juice.

Answer 4

Lancenigo di Villorba (TV), Italy

WHAT IS pH?
pH is a conventional index interesting the concentration of hydrogen ions, e.g. |H+|

pH = 0 - LOG(|H+|)

Since usually |H+| <<< 1, hence pH is greater than zero.
In apple's juice I find |H+| = 1E-3 M
in stomach I find |H+| = 1E-2 M.

Finally, stomach contains a |H+|'s value 10-times greater than apple juice's one.

I hope this helps you.

Answer 5

Its 10 times. PH is -log10H+. There is no difficulty in calculating it.
It is 10^3-2 times. i.e.10 times.

Answer 6

1

Answer 7

1 time more acidic than apple juice

Answer 8

well,if the acidity is defined in terms of the concentration of H+ ion(generally) than the answer will be 10x. because you can calculate the concentration of H+ from this equation:

pH = - log [H+]

then compare them. You'll get the answer directly

Answer 9

10x

Answer 10

10 times.....the pH scale is logarithmic.