Calculate $\Delta$ _rG ^$\circ$ for the Reaction Below at 25 $\circ$ C
2 Na(s)+ 2 H₂O( )

question 4

Multiple Choice

Calculate $\Delta$ _rG ^$\circ$ for the reaction below at 25.0 ^$\circ$ C
2 Na(s) + 2 H₂O( ) $\to$ 2 NaOH(aq) + H₂(g)
Given $\Delta$ _rH ^$\circ$ = -366.6 kJ/mol-rxn and $\Delta$ _rS ^$\circ$ = -154.2 J/K.mol-rxn.

• A) -371.2 kJ/mol-rxn
• B) -320.6 kJ/mol-rxn
• C) -215.4 kJ/mol-rxn
• D) +371.2 kJ/mol-rxn
• E) +4634.9 kJ/mol-rxn

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Definitions:

Profit Margin Ratio

A financial metric that measures the percentage of revenue that exceeds the cost of goods sold, indicating the profitability of sales.

Net Income

The total earnings of a company after deducting all expenses, taxes, and losses, indicating the company's profitability.

Net Sales

The revenue from sales after deducting returns, allowances for damaged or missing goods, and discounts.

Times Interest Earned

A metric that measures a company's ability to meet its interest payments on outstanding debt.