How many litres of fluorine gas at stp can be collected from the decomposition of 90.7 g of AuF3

12 L fluorine gas at STP can be collected from the decomposition of 90.7 g of

Explanation:

The balanced decomposition reaction is shown as

moles of

According to stoichiometry:

2 moles of gives = 3 moles of flourine gas

Thus 0.36 moles of gives = of flourine gas

Using ideal gas equation :

P = pressure of gas = 1 atm ( at STP)

V = Volume of gas = ?

n = moles of gas = 0.54

R = gas constant = 0.0821 L atm/Kmol

T = temperature = 273 K ( at STP)

Putting the values we get :

Thus 12 L fluorine gas at STP can be collected from the decomposition of 90.7 g of

it takes on an electronical energy