mention the steps followed to write the molecular formula of a compound ?
Answers
Explanation:
Divide the molar mass of the compound by the empirical formula mass. The result should be a whole number or very close to a whole number. Multiply all the subscripts in the empirical formula by the whole number found in step 2. The result is the molecular formula.
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Answer:
Chemical Formula
As already stated, a chemical formula is a symbolic expression signifying the number of atoms present in a molecular substance. We determine the type of atom by referring to its symbol, so for Hydrogen, we will use H. The number of atoms is determined by the subscript attached to the symbol. So a chemical formula of water, i.e H₂O has two atoms of hydrogen and a single atom of oxygen.
Steps for writing a chemical formula
Step 1: First, you have to decide the type of the bond.
If the prefixes are used, then it is a covalent bond. In case there are no prefixes, it is an ionic bond. After that is decided move to Step number 2.
Step 2: Now, write down the symbol of the polyatomic ion or the element.
Step 3: Now, if the prefix was used, you’ll have to add a subscript. You’ll also have to add a subscript in order to balance the charge.
Solved Example For You
Q. Write the chemical formulae for:-
- Hexane
- Sodium Chloride
Ans. C6H14 – this has 6 atoms of carbon and 14 atoms of Hydrogen and is collectively called Hexane. NaCl- also known as Sodium Chloride or common salt, this formula has a single atom of Sodium and a single atom of Chloride. Always remember that in places where there is no subscript, like in the example above, the value of atom is presumed to be 1.
