Question

Lemon juice has a pH of about 2.0, compared with a pH of about 1.0 for stomach acid. Therefore, the concentration of H+ in stomach acid is __________ than that of lemon juice.

Answer 1

Answer:

The concentration of H⁺ in stomach acid is approximately ten times greater than that of lemon juice.

Explanation:

Answer 2

Answer:

The concentration of H⁺ in stomach acid is approximately ten times greater than that of lemon juice.

Explanation:

The H⁺ concentration of a solution is exponentially related to its pH value:

$\rm [H^{+}] = 10^{-pH}$.

For lemon juice:

$\rm [H^{+}] = 10^{-2.0} = 0.01\; M$.

For stomach acid:

$\rm [H^{+}] = 10^{-1.0} = 0.1\; M$.

Thus, the concentration of H⁺ in stomach acid is approximately ten times greater than that of lemon juice.