Chemistry
Grade-9
Easy
Question
Which of the following statements are incorrect?
- Empirical formula defines the simplest ratio of molecular formula
- Molecular formula defines the exact number of atoms present in a compound
- Actual yield and theoretical yield both are expressed in percentage
- Molecular formula is determined from the empirical formula
Hint:
Theoretical yield is based on the limiting reactant.
The correct answer is: Actual yield and theoretical yield both are expressed in percentage
- Empirical formula defines the simplest ratio of molecular formula.
- Molecular formula defines the exact number of atoms present in a compound.
- The actual yield is the quantity of a product that is obtained from a chemical reaction. In contrast, the calculated or theoretical yield is the amount of product that could be obtained from a reaction if all of the reactant converted to product. Theoretical yield is based on the limiting reactant.
- Molecular formula is determined from the empirical formula.
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