Multiple Choice
Which of the following best describes a balanced chemical equation?
3. Chemical Reactions
Balancing Chemical Equations
Back3. Chemical Reactions
Balancing Chemical Equations
- Multiple ChoiceConsider the unbalanced chemical equation: C_2H_5OH + O_2 → CO_2 + H_2O. What is the total number of oxygen atoms present on the left-hand side of this equation?
- Multiple ChoiceConsider the balanced equation below:2 Fe + 3 Cl_2 → 2 FeCl_3What is the mole ratio of Cl_2 to Fe?
- Multiple ChoiceWhich of the following best describes the reaction: 2 H_2S(g) + 3 O_2(g) → 2 H_2O(g) + 2 SO_2(g)?
- Multiple ChoiceWhich condition must be met in order for a chemical equation to be considered balanced?
- Multiple ChoiceWhy must chemical equations be balanced?
- Multiple ChoiceWhen balancing the following chemical equation, are the charges balanced? Fe^{2+} + MnO_4^- ightarrow Fe^{3+} + Mn^{2+}
- Multiple ChoiceWhat is the final step in the scientific method?
- Multiple ChoiceWhich of the following is the correctly balanced chemical equation for the reaction between NaBr and H3PO4 to form Na3PO4 and HBr?
- Multiple ChoiceWhich of the following statements correctly describes the balanced chemical equation 2H_2 + O_2 → 2H_2O?
- Multiple ChoiceWhich of the following is the correctly balanced chemical equation for the reaction between hydrogen sulfide and oxygen among volcanic gases to produce sulfur dioxide and water?
- Multiple ChoiceDuring combustion, methane yields carbon dioxide and water. The unbalanced equation for this reaction is: CH4(g) + O2(g) → CO2(g) + H2O(l). What will the mole ratios for the balanced equation be? (What coefficients are needed in order to balance this equation?)
- Multiple ChoiceWhat is the balanced chemical equation for the reaction between iron(III) chloride (FeCl3) and sodium hydroxide (NaOH)?
- Multiple ChoiceWhich of the following is the balanced chemical equation for the reaction of solid strontium with iodine gas?
- Multiple ChoiceWhich of the following is the correctly balanced form of the chemical equation: Fe + O2 → Fe2O3?