Question

Part 1. A chemist reacted 15.0 liters of F2 gas with NaCl in the laboratory to form Cl2 and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.

F2 + 2NaCl → Cl2 + 2NaF

Part 2. Explain how you would determine the mass of sodium chloride that can react with the same volume of fluorine gas at STP.

Answer 1

From the calculation and the data provide, the mass of NaCl is about 115 g.

What is reaction?

The term reaction refers to the combination of two or more substances to yield a product.

The equation of the reaction is; F2 + 2NaCl ----->Cl2 + 2NaF

Number of moles of F2 reacted is obtained from;

PV = nRT

n = PV/RT

n =  1.50 atm. * 15.0 l/0.082 atmLK-1mol-1 * 280

n = 22.5/22.9

n = 0.98 moles

If 1 mole of F2 reacts with 2 moles of NaCl

0.98 moles of F2 reacts with 0.98 moles * 2 moles/1 mole

= 1.96 moles

Mass of NaCl = 1.96 moles * 58.5 g/mol = 115 g

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