How many formula units are present in 3.4 moles of NaOH?

• A. 3.4 × 10^{23} formula units
• B. 1.16 × 10^{24} formula units
• C. 2.05 × 10^{24} formula units
• D. 6.02 × 10^{23} formula units

Answer: (C)

Verified step by step guidance

1. Understand that the problem asks for the number of formula units in a given amount of moles of NaOH. A formula unit refers to the simplest ratio of ions represented in an ionic compound, and for NaOH, it corresponds to one unit of NaOH.
2. Recall Avogadro's number, which is the number of particles (atoms, molecules, or formula units) in one mole of a substance. Avogadro's number is \$6.02 \times 10^{23}$ formula units per mole.
3. Set up the calculation to find the total number of formula units by multiplying the number of moles by Avogadro's number: \(\text{Number of formula units} = \text{moles} \times 6.02 \times 10^{23}\).
4. Substitute the given value of moles (3.4 moles) into the equation: \(\text{Number of formula units} = 3.4 \times 6.02 \times 10^{23}\).
5. Perform the multiplication to find the total number of formula units present in 3.4 moles of NaOH.