Calcium metal reacts with a potassium chloride solution to form calcium chloride and potassium ions. balance this reaction. (s) + (aq) → cacl2(s) + +(aq) a) 1, 2, 1, 2 b) 1, 2, 1, 1 c) 1, 1, 1, 1 d) 2, 1, 2, 1

The reaction of the calcium metal with potassium chloride is a displacement reaction, which results in the formation of the calcium chloride, and potassium ions.  This reaction can be written as follows in a balanced form:

(s) + 2KCl(aq) → Ca (s) + 2 (aq)

The equation now on the right and left side of the reaction are both balanced and equal. Hence, the correct answer is 'Option A'.

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