As a purchasing agent for a pharmaceutical company, how much chlorine, Cl₂, do you need to order to react completely with 500 kg of platinum, Pt, to make cisplatin, PtCl₂(NH₃)₂?

Question

Quizplus · Accepted Answer

According to the balanced chemical equation, one mole of platinum reacts with two moles of chlorine to produce one mole of cisplatin. The molar mass of platinum is 195.08 g/mol and the molar mass of chlorine is 35.45 g/mol. Therefore, the amount of chlorine needed to react completely with 500 kg of platinum is:

500 kg / (195.08 g/mol) = 2564.5 mol of platinum

2564.5 mol of platinum * (2 mol of Cl per 1 mol of Pt) * (35.45 g/mol) = 182,111 g or 182 kg of chlorine

Thus, the correct answer is choice A) 182 kg.

As a Purchasing Agent for a Pharmaceutical Company, How Much