Question

Q.write the steps the chemical formulae using cross multiplication method?
1) sodium sulphate
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Answer 1

Answer:

Formula of sodium sulfate is Na2SO4. It is an ionic compound and consists of 2 sodium ions and 1 sulfate ion. Sodium is a cation while sulfate is an anion. Sodium has +1 charge and sulfate has -2 charge on it.

According to criss cross rule:

                               

                                      Na      SO4

                                      +1         -2

Now according to the rule exchange their charges. After cross over charges 2 will be assigned to Na and 1 will be assigned to SO4.

The final product will be Na2SO4.

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