Concept explainers
Interpretation:
The simplest formula that contains
Concept Introduction:
Mole is S.I. unit. Number of moles is calculated as ratio of mass of compound to molar mass of compound.
Molar mass is sum of total mass of all atoms that make up mole of particular molecule that is mass of 1 mole of compound. The S.I unit is
The expression to relate number of moles, mass and molar mass of compound is as follows:
Empirical formula represents simplest positive integer ratio of atoms in the compound. It only gives proportions of elements in compound. Molecular formula comprises of chemical symbols for respective elements followed by numeric subscript that denotes number of atom of each element present in the molecule.
Answer to Problem 1PQ
Option (A) is the correct one.
Explanation of Solution
Reason for correct option:
Consider sample that contains
The formula to calculate moles of
Substitute
The formula to calculate moles of
Substitute
The formula to calculate moles of
Substitute
Preliminary formula for sample is formed with moles of
Each of subscripts of
Hence option (A) is correct.
Reason for incorrect option:
Empirical formula of given compound does not match with
The simplest formula that contains
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