Final answer:
B. 1.2 To produce 0.6 moles of sodium chloride, half the amount in moles of chlorine gas is needed according to the balanced chemical equation. Therefore, the answer is 0.3 moles of chlorine gas.
Step-by-step explanation:
The question is asking how many moles of chlorine gas (Cl2) are required to produce 0.6 moles of sodium chloride (NaCl) based on the balanced chemical equation 2 Na (s) + Cl2 (g) → 2 NaCl (s). According to the equation, two moles of sodium (Na) react with one mole of chlorine gas to produce two moles of sodium chloride. Therefore, for every mole of chlorine gas, two moles of sodium chloride can be produced.
Since the stoichiometry of the reaction is a 1:2 ratio between chlorine gas and sodium chloride, we can say that half the amount of moles of sodium chloride is the amount of chlorine gas needed for the reaction. Here, 0.6 moles of NaCl would require half of that in chlorine gas, which would be 0.3 moles of Cl2. So, the correct answer is D. 0.3 moles of chlorine gas.