Consider the Reaction
2Fe₂O₃(s)+ 3C(s) $\rightarrow$ 4Fe(s)+ 3CO₂(g) $\Delta$ H ^$\omicron$ = 462 KJ

question 172

Multiple Choice

Consider the reaction
2Fe₂O₃(s) + 3C(s) $\rightarrow$ 4Fe(s) + 3CO₂(g) ,
$\Delta$ H ^$\omicron$ = 462 kJ,
$\Delta$ S ^$\omicron$ = 558 J.K^-1
Calculate the equilibrium constant for this reaction at 525 ^$\omicron$ C.

• A) 3.04 * 10 ^{- 3}
• B) 8.07 * 10 ^{- 2}
• C) 5.20 * 10 ^{- 7}
• D) 1.9 * 10⁶
• E) 2.18 * 10 ^{- 2}

---

Definitions:

Secretion

The process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion.

Nephron

The functional unit of the kidney, responsible for filtering and excreting waste products from the blood.

Peritubular Capillaries

Tiny blood vessels surrounding the tubules in the kidneys where exchange of substances with the filtrate occurs.

Diaphragm

(1) The muscle of breathing that separates the thorax from the abdomen; (2) Divides the anterior cavity into an upper and a lower cavity.