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

Question

Chemistry

Cesar Barnett

3 August, 06:01

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

+3

Answers (1)

Know the Answer?

Giovani Vazquez · Answer 1

Answer: 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.