Translate the following statement into chemical equation and balance it:

Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

3 B a C l_{2} (a q) + A l_{2} (S O_{4})_{3} (a q) \to 2 A l C l_{3} (a q) + 3 B a S O_{4} (s)

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B a C l_{2} (a q) + A l_{2} (S O_{4})_{3} (a q) \to A l C l_{3} (a q) + B a S O_{4} (s)

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3 B a C l + A l_{2} (S O_{4})_{3} \to 2 A l C l_{3} + 3 B a S O_{4}

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4 B a C l_{2} (a q) + A l_{2} (S O_{4})_{3} (a q) \to 5 A l C l_{3} (a q) + 2 B a S O_{4} (s)

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Solution

The correct option is A $3 B a C l_{2} (a q) + A l_{2} (S O_{4})_{3} (a q) \to 2 A l C l_{3} (a q) + 3 B a S O_{4} (s)$
A balanced equation for "Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate" is as follows :
$3 B a C l_{2} (a q) + A l_{2} (S O_{4})_{3} (a q) \to 2 A l C l_{3} (a q) + 3 B a S O_{4} (s)$
The reaction is double displacement reaction, since the ions of two reactants are exchanged to form two new compounds. The reaction is also called as precipitation reaction as a precipitate of barium sulphate is being formed.
Option A is correct.

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Barium chloride reacts with aluminium sulfate to give aluminium chloride and a precipitate of barium sulfate.

Translate and balance

Translate the following statements into chemical equations and then balance them.

(A) Hydrogen gas combines with nitrogen to form ammonia

(B) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

(C) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate. [3 MARKS]

Translate the following statements into chemical equations and then balance them.

(a) Hydrogen gas combines with nitrogen to form ammonia.

(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

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