Concept explainers
Interpretation:
Empirical formula of the compound with 10.52 g Ni, 4.38 g C and 5.10 g N needs to be determined.
Concept introduction:
Empirical formula of a molecule is the smallest unit which is repeated in the molecule.
Answer to Problem 173A
The empirical formula is NiC2N2.
Explanation of Solution
Mass of Ni, C and N are 10.52 g, 4.38 g and 5.10 g respectively. The molar mass of Ni, C and N is 59 g/mol, 12 g/mol and 14 g/mol respectively.
The number of moles of each element can be calculated as follows:
Moles of Ni
Moles of C
Moles of N
Smallest mole ratio Ni: C: N
Thus, empirical formula is NiC2N2.
Empirical formula of the given compound is NiC2N2.
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