A compound containing nitrogen and oxygen is decomposed in the laboratory and produces 1.78 g of nitrogen and 4.05 g of oxygen. Calculate the empirical formula of the compound.
I thought it was N2 O1 but it's not..?
Empirical formula of this compound?
2018-01-17 6:42 am
回答 (1)
2018-01-17 6:51 am
✔ 最佳答案
Molar mass of N = 14.0 g/molNo. of moles of N produced = (1.78 g) / (14.0 g/mol) = 0.127 mol
Molar mass of O = 16.0 g/mol
No. of moles of O produced = (4.05 g) / (16.0 g/mol) = 0.253 mol
Mole ratio N : O = 0.127 : 0.253 ≈ 1 : 2
Empirical formula = NO₂
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