Question

What is the volume occupied by 17.75 g of $C{l}_2$ at STP?

• A. $5.6l$
• B. $22.4l$
• C. $11.2l$
• D. $2.8l$

Answer 1

Answer: (A)

$5.6l$

In order to solve this problem, we would use the ideal gas law formula PV = nRT

at STP standard temp and pressure is 1 atm and 273k

we have

P = 1atm, n = $\frac{17.75}{70.90}$ mole = 0.250, R = $0.0821$ $atm\ast L/mol\ast K$ , T=$273K$

V = $\frac{nRT}{P}$

= $0.250\times 0.0821\times 273$

= $5.6L$

answer is A