Which of the following reactions is a redox reaction?
Practice Questions
1 question
Q1
Which of the following reactions is a redox reaction?
H2 + Cl2 → 2HCl
NaOH + HCl → NaCl + H2O
CaCO3 → CaO + CO2
C6H12O6 + 6O2 → 6CO2 + 6H2O
The combustion of glucose is a redox reaction where glucose is oxidized.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following reactions is a redox reaction?
Solution: The combustion of glucose is a redox reaction where glucose is oxidized.
Steps: 6
Step 1: Understand what a redox reaction is. A redox reaction involves the transfer of electrons between two substances, where one substance is oxidized (loses electrons) and the other is reduced (gains electrons).
Step 2: Identify the substances involved in the combustion of glucose. The main substances are glucose (C6H12O6) and oxygen (O2).
Step 3: Write the balanced chemical equation for the combustion of glucose: C6H12O6 + 6 O2 → 6 CO2 + 6 H2O.
Step 4: Determine what happens to glucose in the reaction. Glucose is oxidized to carbon dioxide (CO2), meaning it loses electrons.
Step 5: Determine what happens to oxygen in the reaction. Oxygen is reduced to water (H2O), meaning it gains electrons.
Step 6: Conclude that since glucose is oxidized and oxygen is reduced, the combustion of glucose is indeed a redox reaction.
