Write balanced chemical equation for the removal of permanent hardness
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Answer
You have to (i) balance mass; and (ii) balance charge.
What do I mean by balance mass? Well, if I start with 10 g of reactant AT MOST I can get 10 g of product, and the chemical equation must reflect this mass balance.
For the (balanced!) combustion equation:
CH4(g)+2O2(g)→CO2(g)+2H2O(l)
There are 12 g carbon reactant, and 12 g of carbon product.......and you fill in the masses of hydrogen and oxygen.
The given equation likewise balances charge. Product and reactants are electrically neutral.
When we write redox equations we try to represent electron transfer:
Fe→Fe2++2e−
2H3O++2e−→H2(g)+2H2O(l)
And electrons are eliminated in the balanced redox equation:
Fe+2H3O+→Fe2++H2(g)↑⏐+2H2O(l)
In each instance charge and mass are balanced, as is required. See herefor another answer to this question, and also here for this topic where it concerns corrosion.
I have written here before that we practise this stoichiometry, this garbage in equals garbage outprinciple all the time. If you buy something for £3−75, and give the vendor a £10−00 note, would you have cause for complaint if you received £5−25 in change?
Where z is nothing but a zeolite . Hopefully this helps
