Citric acid which is present in citrus fruits is a triprotic acid calculate the ph and the citrate ion concentration for a.050 m solution

pH = 1.3

Explanation:
pH is used to measure the concentration of hydrogen ions in a solution. It can be calculated as follows:
pH = -log [H+]

Since the given solution is an acid, therefore, the concentration of H+ ions is the same as the molarity/concentration of the solution.
[H+] = 0.05 m

Substitute in the above equation to get the pH as follows:
pH = -log [H+] = -log [0.05] = 1.3

Hope this helps :)