Enthalpy of Reaction

Interactive Video
•
Chemistry, Science, Physics
•
11th Grade - University
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary focus of the enthalpy of reaction?
The color change during a reaction
The physical state of the reactants
The speed at which a reaction occurs
The amount of energy released or absorbed during a chemical reaction
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an endothermic reaction, how does energy flow?
Equally between the reaction and surroundings
From the surroundings into the reaction
There is no energy flow
From the reaction to the surroundings
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the sign of enthalpy change when a reaction is reversed?
It becomes positive
It becomes negative
It remains the same
It doubles
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Born-Haber cycle used to illustrate?
The physical state of products
The steps in a reaction and their enthalpy changes
The color change in a reaction
The speed of a reaction
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Hess's Law, what is the enthalpy of a reaction equal to?
The sum of the enthalpies of the products
The sum of the enthalpies of the reactants
The sum of the enthalpies of all steps in the reaction
The difference between the enthalpies of products and reactants
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in applying Hess's Law to solve for enthalpy change?
Measure the physical state of reactants
Identify the target reaction
Calculate the speed of the reaction
Determine the color change
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you manipulate equations to find the overall enthalpy change?
By changing the physical state of reactants
By reversing and scaling equations
By altering the color of products
By measuring the speed of the reaction
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