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Solved: A compound of P and F was analyzed as follows:

Chapter 5, Problem 57P

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QUESTION:

A compound of P and F was analyzed as follows: Heating 0.2324 g of the compound in a 378-\(\mathrm{cm}^{3}\) container turned all of it to gas, which had a pressure of 97.3 mmHg at 77°C. Then the gas was mixed with calcium chloride solution, which turned all of the F to 0.2631 g of \(\mathrm{CaF}_{2}\). Determine the molecular formula of the compound.

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QUESTION:

A compound of P and F was analyzed as follows: Heating 0.2324 g of the compound in a 378-\(\mathrm{cm}^{3}\) container turned all of it to gas, which had a pressure of 97.3 mmHg at 77°C. Then the gas was mixed with calcium chloride solution, which turned all of the F to 0.2631 g of \(\mathrm{CaF}_{2}\). Determine the molecular formula of the compound.

ANSWER:

Step 1 of 5

The goal of the problem is to find the molecular formula of the compound.

Given:

Mass of compound = 0.2324 g

P = 97.3 mmHg

T = 77°C =

Mass of F in \(CaF_2\) = 0.2631

V = 378 \(cm^3\)

 

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