Question

Please help:

A) The H⁺ concentration in an aqueous solution at 25 °C is 9.1 × 10⁻⁴. What is [OH⁻]?

B) A neutral solution of water at a particular temperature has a concentration of OH⁻ of 5.2 × 10⁻⁷ M. What is Kw at this temperature?

C)What is the pH of a 6.9 × 10⁻³ M HI solution?

 

Thank you!!!

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