Question

$2.5mL$ of $2/5M$ weak monoacidic base ($K_b=1\times {10}^{-12})$ at ${25}^{o}C$. The concentration of $H^{+}$ ion at equivalence point is:
($K_w=1\times {10}^{-14}$ at ${25}^{o}C$)

• A. $3.7\times {10}^{-13}M$
• B. $3.2\times {10}^{-7}M$
• C. $3.2\times {10}^{-2}M$
• D. $2.7\times {10}^{-2}M$

Answer 1

Answer: (D)

$2.7\times {10}^{-2}M$