Combustion Reactions of Glucose

The video tutorial explains how to balance the chemical equation for the combustion of glucose. It begins by introducing the concept of combustion reactions, particularly organic ones involving glucose. The tutorial then provides a step-by-step guide to balancing the equation, emphasizing the importance of counting oxygen atoms correctly and leaving O2 adjustments until last. The video concludes by discussing the states of matter for the reactants and products, noting that combustion reactions are exothermic.

What type of reaction is the combustion of glucose?

• Organic combustion reaction

• Decomposition reaction

• Synthesis reaction

• Endothermic reaction

Why is it recommended to leave O2 until last when balancing combustion reactions?

• It is the most reactive element

• It does not affect the number of carbon or hydrogen atoms

• It is the heaviest molecule

• It is a noble gas

What is the first step in balancing the combustion equation for glucose?

• Balancing hydrogen atoms

• Balancing nitrogen atoms

• Balancing oxygen atoms

• Balancing carbon atoms

How many oxygen atoms are there after balancing carbon and hydrogen in the equation?

• 12

• 15

• 13

• 18

What is the final coefficient for O2 in the balanced equation?

• 4

• 5

• 6

• 7

What is the state of glucose in the combustion reaction?

• Plasma

• Liquid

• Gas

• Solid

What is the state of water in the combustion reaction of glucose?

• Gas

• Liquid

• Solid

• Plasma

Why is water in the combustion reaction initially in the gaseous state?

• Because of low pressure

• Because water is always a gas

• Because the reaction is exothermic

• Because the reaction is endothermic

What is the nature of combustion reactions in terms of energy?

• Endothermic

• Exothermic

• Isothermal

• Neutral

Which of the following is a product of the combustion of glucose?

• Methane

• Carbon dioxide

• Nitrogen gas

• Ammonia