finding the pH

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705913589
Posts: 60
Joined: Fri Sep 29, 2023 11:10 am

finding the pH

Postby 705913589 » Mon Dec 04, 2023 11:03 pm

Hi, can someone please explain this to me: Hydrochloric acid, HCl, is an acid that plays a key role in the digestion of protein and activating digestive enzymes in the stomach. Hydrochloric acid can be synthetically produced by bubbling hydrogen chloride gas through water. A 2.00L aqueous solution was made with 0.100 mol of HCl. What is the pH of this solution?
Can you please explain the steps, thank you!

Daniel P 3J
Posts: 41
Joined: Mon Oct 02, 2023 8:22 am

Re: finding the pH

Postby Daniel P 3J » Mon Dec 04, 2023 11:22 pm

Calculate the Molarity (M): Molarity = moles/Liters = 0.100 moles / 2.00 L = 0.050 M.

Understand HCl Dissociation: HCl is a strong acid, meaning it completely dissociates in water into H⁺ and Cl⁻ ions. So, the concentration of H⁺ ions is the same as the concentration of HCl, which is 0.050 M.

Calculate pH: pH = -log[H⁺]. The concentration of H⁺ ions is 0.050 M. So, pH = -log(0.050).

Find the pH Value: Use a calculator to find the value of -log(0.050) to get the pH.


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