Understanding Relative Rate in Chemistry

This video tutorial covers the concept of calculating relative rate in chemistry, particularly when average rate calculation is not feasible. It explains the formula for relative rate, provides examples, and discusses its application in reactions with noticeable color changes. The video also explores the relationship between temperature and reaction rate, demonstrating how to extrapolate data from graphs. Finally, it encourages viewers to continue learning and follow the instructor for more content.

What is the primary reason for using relative rate in certain chemical reactions?

• To measure reactions that produce gas.

• To determine the exact quantity of reactants.

• To calculate the average rate of all reactions.

• To measure reactions with a clear color change.

Where can you find the equation for relative rate in your data book?

• Page 8

• Page 6

• Page 4

• Page 2

How do you calculate the relative rate if the time taken for a reaction is 58 seconds?

• 1 multiplied by 58

• 58 divided by 1

• 1 divided by 58

• 58 multiplied by 1

What is the relative rate if the reaction time is 5 seconds?

• 0.02 per second

• 0.1 per second

• 0.5 per second

• 0.2 per second

Which reaction is used as an example where average rate calculation is not possible?

• Acidified potassium halogenate and oxalic acid

• Sodium chloride and silver nitrate

• Hydrochloric acid and sodium hydroxide

• Copper sulfate and zinc

At what temperature range is the reaction between acidified potassium halogenate and oxalic acid usually conducted?

• Below 30 degrees

• Between 40 and 70 degrees

• Above 80 degrees

• Between 20 and 50 degrees

What happens to the rate of reaction for every 10-degree rise in temperature?

• It triples.

• It halves.

• It remains constant.

• It doubles.

What type of graph is used to show the relationship between temperature and rate?

• Curve graph

• Bar graph

• Linear graph

• Pie chart

How long does the reaction take at 55 degrees according to the extrapolated graph?

• 15 seconds

• 45 seconds

• 25 seconds

• 35 seconds

What is the rate of reaction at 55 degrees as extrapolated from the graph?

• 0.02 per second

• 0.04 per second

• 0.06 per second

• 0.08 per second