Question
12. Choose the correctly balanced equation for the following reaction: Potassium + water arrow potassium hydroxide + hydrogen gas 2K+2H_(2)Oarrow K+HO_(2) 2K+2H_(2)Oarrow 2KOH+H_(2) K+2H_(2)Oarrow KOH+H_(2) K+H_(2)Oarrow KOH+2H
Answer
4.2
(248 Votes)
Teddy
Veteran · Tutor for 9 years
Answer
B
Explanation
To balance a chemical equation, it means that there should be same number of every type of atoms on both the product and the reactant sides of the equation. For this case, the proper equation is 2 K + 2 H2O → 2 KOH + H2. Here, there are 2 atoms of potassium, 4 atoms of hydrogen, and 2 atoms of oxygen on both the reactant and product sides.