3. Chemical Reactions

Is the following chemical equation balanced? 2Na + 2H2O → 2NaOH + H2

Balancing a chemical equation

Which of the following is the balanced chemical equation for the reaction of aluminum sulfide with water to form aluminum hydroxide and hydrogen sulfide?

Given the following unbalanced half-reactions: 1) Fe^{2+} → Fe^{3+} + e^- 2) MnO_4^- + 8H^+ + 5e^- → Mn^{2+} + 4H_2O Which of the following is the correctly balanced overall reaction?

Which of the following is the correctly balanced equation for the reaction: H2O2(aq) + ClO2(aq) → ClO2(aq) + O2(g)?

Why are coefficients important when balancing chemical equations?

Which of the following is the correctly balanced equation for the reaction between NaNO3(aq) and KCl(aq)?

What is the balanced molecular equation for the reaction between nitric acid (HNO3) and magnesium hydroxide (Mg(OH)2)?

Which of the following is the balanced chemical equation for the reaction of calcium hydroxide with hydrochloric acid?

Which of the following is the correctly balanced equation for the combustion of methane, and what type of reaction is it?

Which of the following is the correctly balanced equation for the reaction between zinc and copper(II) sulfate?

In the balanced chemical equation 2Al + 6HCl → 2AlCl3 + 3H2, how many chlorine atoms are present on the products side?

Which of the following chemical equations is unbalanced?

Which of the following is an important step when balancing a chemical equation?