Multiple Choice
Identify the correct balanced equation and net ionic equation for the reaction between aqueous hydrochloric acid (HCl) and solid calcium carbonate (CaCO3).
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3. Chemical Reactions
Balancing Chemical Equations
Multiple Choice
Which of the following sets of reactants correctly balances the chemical equation for the reaction: ___ + O2 → CO2 + H2O?
A
C4H10
B
CH4
C
C2H6
D
C3H8
Verified step by step guidance1
Identify the chemical equation to be balanced: ___ + O2 → CO2 + H2O.
Recognize that the reactants are hydrocarbons, which are compounds made of carbon (C) and hydrogen (H).
Write the general form of the combustion reaction for a hydrocarbon: CxHy + O2 → CO2 + H2O.
For each given hydrocarbon (CH4, C2H6, C3H8, C4H10), balance the number of carbon (C) and hydrogen (H) atoms on both sides of the equation.
Balance the oxygen (O) atoms by adjusting the coefficient of O2 to ensure the total number of oxygen atoms on the reactant side equals the total on the product side.
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