Solutions1820-1830
1. Urea and ammonium cyanate
Urea, CO(NH2)2, and ammonium cyanate, NH4OCN, have the same molecular formula. What is it? What are compounds related in this way called?
CH4N2O. They are isomers: they have the same composition, but their atoms are bonded differently and their properties are different.
2. Prout's analysis
Calculate the percentage of nitrogen in urea (C = 12.0; H = 1.0; N = 14.0; O = 16.0) and compare it with the 46.65% obtained by Prout in 1817.
Molar mass: 12 + 16 + 2 × 14 + 4 × 1 = 60 g/mol. Nitrogen: 28/60 = 46.7%. Prout's value is almost identical.