Question

Which of the following solutions is the product of the neutralization reaction between $10$ ml $0.2M$ $KOH$ and $10ml$ $0.2$ $MHI$?

• A. $0.1M$ $K{I}_3$
• B. $0.1M$ $KI$
• C. $0.2M$ $KI$
• D. $0.4M$ $KI$
• E. $0.4M$ $HOH$

Answer 1

Answer: (B)

$0.1M$ $KI$

Millimoles of $KOH=10\times 0.2=2$

Millimoles of $HI=10\times 0.2=2$

$\therefore$ Millimoles of salt $KI$ formed $=2$

$KOH+HI⟶\underset{salt}{\underset{}{KI}}+H_{2}O$

Volume after mixing $=10+10=20$ $mL$

$\therefore$ Concentration of salt formed $=\frac{millimoles}{VolumeinmL}=\frac{2}{20}=0.1$ $M$

$\therefore$ The product is $0.1$ $M$ $KI$