T r s tat contains Cl 0 and F In an experiment you find that

T r s tat contains Cl, 0, and F. In an experiment, you find that 0.128 g of this new gas has a pressure of 14.0 Hgna1910mL flask at 17°C Whatzsthe identity ofthe unknown gas?

Solution

ClO2 reacts with F2

Pressure (P) = 14 mmHg/760 = 0.0184 atm

Volume (V) = 1910 ml = 1.91 L

R = gas constant

T = 17 oC + 273 = 290 K

mass of gas produced = 0.128 g

So using ideal gas law

molar mass of new gas = 0.128 x 0.08205 x 290/0.0184 x 1.91 = 86.66 g/mol

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speed of gas = sq.rt.(1/T)

If the temperature is doubled,

speed of gas would be halved