Question

Q1. What are the following points to be kept in mind
while writing the chemical equations?​

Answer 1

Answer:

• Identify the cation and anion present in the chemical for which the formula must be written. ...

• Balance the charges by criss-cross multiplication such that the cation receives the charge of anion and vice-versa.

• Write the cation first followed by the anions .
• Separate the products and reactants by an arrow pointing towards the reactants .
• Writing the reactants on the right hand side .
• Write the chemical formula of all the compounds involved in the equation correctly

Explanation:

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Answer 2

$\large \bold {Question:}$

• What are the following points to be kept in mind while writing the chemical equations?

$\large \bold {Answer \: and \: Explanation:}$

The rules which are to be kept in mind while writing a chemical formula is:

1. The valencies or charges on the ion must balance.
2. When a compound consists of a metal and a non-metal, the name or symbol of the metal is written first.
3. For ex: calcium oxide (CaO), sodium chloride (NaCl) where oxygen and chlorine are written on the right whereas calcium and sodium are written on the left.
4. If the valencies of two elements are same, we will simplify the formula.
5. In compounds formed with polyatomic ions, the ion is enclosed in a bracket before writing the number to indicate the ratio.