Calculate the Equilibrium Constant for the Following Reaction at 25 $\circ$

question 39

Multiple Choice

Calculate the equilibrium constant for the following reaction at 25 ^$\circ$ C,
2 IO₃^-(aq) + 5 Hg( ) + 12 H⁺(aq) $\to$ I₂(s) + 5 Hg²⁺(aq) + 6 H₂O( )
Given the following thermodynamic information.
IO₃^-(aq) + 6 H⁺(aq) + 5 e^- $\to$ I₂(s) + 3 H₂O( ) $~~~~~~~~$ E ^$\circ$ = +1.20 V
Hg²⁺(aq) + 2 e^- $\to$ Hg( ) $~~~~~~~~$$~~~~~~~~$$~~~~~~~~$$~~~~~~~~$ E ^$\circ$ = +0.86 V

• A) 3 \(\times\) 10^-58
• B) 6 \(\times\) 10⁵
• C) 3 \(\times\) 10¹¹
• D) 6 \(\times\) 10²⁸
• E) 3 \(\times\) 10⁵⁷

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Definitions:

Completing The Square

A method used to solve quadratic equations by adding a constant term to both sides to form a perfect square trinomial.

Compounded Annually

The process of calculating interest on both the initial principle and the accumulated interest of previous periods once per year.

Interest Rate

The percentage of a sum of money charged for its use, typically expressed as an annual percentage.

Quadratic Form

An expression in algebra where the highest power of a variable is squared, typically in the format ax^2 + bx + c.