A 45.0 mL sample of 0.15 M HCl is added to 38 mL of 0.2 M NaOH. What is the [H₃O⁺] of the resulting solution?

Name: A 45.0 mL sample of 0.15 M HCl is added to 38 mL of 0.2 M NaOH. What is the [H 3 O + ] of the resulting solution?
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Question

Quizplus · Accepted Answer

The moles of HCl and NaOH are calculated and the limiting reactant is determined. After the reaction, the solution is slightly basic, so the concentration of H₃O⁺ is calculated using the ion product of water, Kw.

A 450 ML Sample of 0