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Calculate the pH of 10 g dm-3 HCL​

User Danil Pyatnitsev
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Final answer:

The pH of the 10 g dm-3 HCl solution is calculated by first converting the mass concentration to molarity, which is 0.274 M for HCl. Then the pH is found to be approximately 0.56 using the formula pH = -log[H3O+].

Step-by-step explanation:

To calculate the pH of a 10 g dm-3 HCl solution, first, we need to convert the concentration from grams per decimeter cubed to molarity (moles per liter). The molar mass of HCl is approximately 36.46 g/mol. So, dividing 10 g by 36.46 g/mol gives us the molarity, which is 0.274 M.

Since HCl is a strong acid, it completely dissociates in water. Therefore, the concentration of hydronium ions [H3O+] is equal to the concentration of HCl. Using the formula pH = -log[H3O+], we find:

pH = -log(0.274) = 0.56.

The pH of the 10 g dm-3 HCl solution is approximately 0.56.

User Ceruleus
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