The rate of a reaction is defined as the change in concentration of a reactant o

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Question: The rate of a reaction is defined as the change in concentration of a reactant or product per unit time. What is the unit of rate?

Options:

Correct Answer: mol/L·s

Solution:

The rate of reaction is expressed in terms of concentration change per unit time, hence the unit is mol/L·s.

The rate of a reaction is defined as the change in concentration of a reactant or product per unit time. What is the unit of rate?

The rate of a reaction is defined as the change in concentration of a reactant or product per unit time. What is the unit of rate?

Correct Answer: mol/L·s

Step 1: Understand that the rate of a reaction measures how fast a reactant is used up or how fast a product is formed.
Step 2: Know that concentration is usually measured in moles per liter (mol/L).
Step 3: Recognize that time is measured in seconds (s).
Step 4: Combine these two pieces of information: the rate is the change in concentration (mol/L) over time (s).
Step 5: Therefore, the unit of rate is mol/L·s, which means moles per liter per second.

Rate of Reaction – The rate of a reaction measures how quickly reactants are converted into products, typically expressed as a change in concentration over time.
Units of Measurement – Understanding the appropriate units for measuring concentration (mol/L) and time (s) is crucial for determining the unit of rate.