1.

In what smallest whole-number ratio must N and O atoms combine to make dinitrogen to tetroxide ? What is the mole ratio of the elements in this compound?

Answer»

the Empirical formula, we can find out the smallest whole number ratio which exists between the elements. Empirical formula and the molecular formula are mathematically related                     Molecular formula = n X empirical formula The molecular formula weight of dinitrogen tetroxide   is 92 g/mol. To get the MOLAR mass, use the molar masses of the individual atoms of Nitrogen and Oxygen Molar mass of Nitrogen is 14.007 g/mol (SINCE it has one atom) Molar mass of Oxygen is  2 × 15.9994 g/mol= 32g/mol (Since it has two atoms) THUS, Empirical formula weight = 14 + 32 = 46g/mol Molecular formula weight = n x empirical formula weight                             46g/mol  = n x 92 g/mol Therefore, n = 2 which is the MOLE ratio of elements in this compound. The molecular formula for your compound is              = → dinitrogen tetroxide.



Discussion

No Comment Found