Respuesta :
Answer;
= 7.59 × 10^-4 M
Explanation;
The molar concentration of [H3O+] in a cola with a pH of 3.120 can be calculated by:
[H3O+]=10−pH
[H3O+]=10−3.120
[H3O+]=7.59×10−4M
Ingestion of large amounts of phosphoric acid found in cola can upset the body's regulation of bone metabolism and reduce the absorption of calcium from the diet. For this reason, people who are at risk of developing osteoporosis are often advised not to drink much cola.
Answer:
[H3o+] = 7.59*10^-4
Explanation:
Given:
pH of cola = 3.120
To determine:
The hydronium ion concentration, [H3O+]
Calculation:
The pH of a solution is a measure of the concentration of the hydronium ion which in turn indicates the acidity of the given solution.
[tex]pH = -log[H3O+][/tex]
[tex][H3O+] = 10^{-pH}[/tex]
for the given cola with pH = 3.120
[tex][H3O+] = 10^{-3.120}=7.59*10^{-4}M[/tex]
