Question

The volume of oxygen at ntp evolved when 1.70 g of sodium nitrate is heated to a constant mass is:

Answer 1

Answer:

5,6 lt

Explanation:

2NaNO3 ---> 2NaNO2 + O2

2 moles of sodium nitrate ---> 1 mole of oxygen

1.7/85= 0.5 moles of sodium nitrate gives 0.25 moles of oxygen

therefore volume = 0.25 x 22.4  =  5.6 lt