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QUESTION

# How can I balance this equation? ___ AlBr3 + ____ K2SO4 ---&gt; ____ KBr + ____ Al2(SO4)3

AlBr_3 + K_2SO_4 -> KBr + Al_2(SO_4)_3

How I balance equations is by first of all dividing the equation into two parts - reactants and products.

Reactants Al = 3 Br = 3 K = 2 S = 1 O = 4

Products Al = 2 Br = 1 K = 1 S = 3 O = 12

Remember all atoms within the brackets get multiplied by the number outwith them.

Step 1 Put a 6 before KBr

AlBr_3 + K_2SO_4 -> 6KBr + Al_2(SO_4)_3

Step 2 Put a 2 before AlBr_3 - this has now balanced the number of Aluminium and Bromine atoms.

2AlBr_3 + K_2SO_4 -> 6KBr + Al_2(SO_4)_3

Step 3 Put a 3 before K_2SO_4

This balances the Potassium, Sulphur and Oxyen

2AlBr_3 + 3K_2SO_4 -> 6KBr + Al_2(SO_4)_3

Now check the reactants and products:

Reactants Al - 2 Br - 6 K - 6 S - 3 O - 12

Products Al - 2 Br - 6 K - 6 S - 3 O - 12

We have now successfully balanced the equation

I hope this helps!