Question

Suppose a sample of rain water has a pH of 6.0 and a sample of gastric juice has a pH of 3.0. Which sample is more acidic? Explain why.

Answer 1

Answer on Question#74150 – Chemistry – Organic chemistry

Question:

Suppose a sample of rainwater has a pH of 6.0 and a sample of gastric juice has a pH of 3.0. Which sample is more acidic? Explain why.

Solution:

\mathrm{pH} = -\lg[\mathrm{H}^*] \\ [\mathrm{H}^*] = 10^{-\mathrm{pH}}

For rain water $[\mathrm{H}^*] = 10^{-\mathrm{pH}} = 10^{-6} \mathrm{M}$

For gastric juice $[\mathrm{H}^*] = 10^{-\mathrm{pH}} = 10^{-3} \mathrm{M}$ – more acidic

Answer:

The sample of gastric juice is more acidic than the sample of rainwater.