What Is the Hydroxide-Ion Concentration in a Solution Formed by Combining

question 21

Multiple Choice

What is the hydroxide-ion concentration in a solution formed by combining 200.mL of 0.16 M HCl with 300.mL of 0.091 M NaOH at 25°C?
HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

• A)1.6 × 10^-13 M
• B)0.091 M
• C)1.1 × 10^-12 M
• D)0.055 M
• E)1.0 × 10^-7 M

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