Potassium (k) combines with magnesium bromide (mgbr2) to form potassium bromide (kbr) and magnesium (mg) during a chemical reaction.
which of the following shows the balanced chemical equation for this reaction?

a) k + mgbr2 = kbr + mg
b) 2 k + mgbr2 → 2 kbr + mg
c) 2 k + mgbr2 = kbr + 2 mg
d) 2 k +2 mgbr2 = 2 kbr + 2 mg

option B - 2 K + MgBr2 = 2 KBr + Mg

Explanation:

2K + MgBr2 --> 2 KBr + Mg

On Left side: 2moles of Potassium (K) reacts with 1 mole of MgBr2

On Right side: 2 moles of KBr and 1 mole of Mg.

You will observe that the coefficient of each element on left side and Right side is balanced in option B, unlike other options.

So, option B is the answer.

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