Multiple Choice
When a bicarbonate or carbonate compound is mixed with an acid, why are bubbles formed?
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6. Chemical Quantities & Aqueous Reactions
Gas Evolution Equations
Multiple Choice
Which of the following reactions will not result in the formation of a gas?
A
hydrochloric acid + sodium carbonate
B
sulfuric acid + sodium hydroxide
C
hydrobromic acid + potassium sulfide
D
phosphoric acid + potassium bisulfite
E
All reactions produce a gas.
Verified step by step guidance1
Step 1: Identify the type of reaction for each pair of reactants. Typically, reactions involving acids and carbonates or sulfides can produce gases.
Step 2: Write the balanced chemical equation for each reaction. For example, hydrochloric acid (HCl) reacting with sodium carbonate (Na2CO3) will produce carbon dioxide (CO2) gas.
Step 3: Analyze the products of each reaction. Determine if any of the products are gases. Common gases formed in these reactions include CO2, H2S, and SO2.
Step 4: Consider the reaction between sulfuric acid (H2SO4) and sodium hydroxide (NaOH). This is a neutralization reaction that typically produces water (H2O) and a salt, without forming a gas.
Step 5: Conclude which reactions produce gases based on the analysis. The reaction between sulfuric acid and sodium hydroxide does not produce a gas, while the others do.
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