Concept explainers
Interpretation:
Empirical formula of the molecule present in skunk spray must be found for which % of C, H and S are is 44.77, 7.46 and 47.76 respectively.
Concept introduction:
Empirical formula of a molecule is the smallest unit which is repeated in the molecule.
Answer to Problem 192A
The empirical formula is C5H10S2.
Explanation of Solution
% of C, H and S are 44.77, 7.46 and 47.76 respectively.
Considering 100 g of compound, the mass of C, H and S is 44.77 g, 7.46 g and 47.76 g respectively.
Also, the molar mass of C, H and S is 12 g/mol, 1 g/mol and 32 g/mol respectively.
Therefore, number of moles of C, H and S can be calculated as follows:
Moles of C
Moles of H
Moles of S
Smallest mole ratio C: H: S can be obtained as follows:
Thus empirical formula is C5H10S2.
Empirical formula of the molecule is C5H10S2.
Chapter 10 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
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