Chemical Reaction Rates Flashcard

Front

Formula for calculating the rate of a chemical reaction in terms of reactant used?

Back

Rate of reaction = Amount of reactant used / Time

Front

Units to express the rate of reaction: g/s or cm³/s, kg/m or L/s, mol/kg or m/s, g/mol or cm/s

Back

g/s or cm³/s

Front

How can the mean rate of a reaction be calculated?

Back

By using the quantity of a reactant or product and the time taken

Front

What does the slope/gradient of a reaction rate graph represent?

Back

The rate of reaction

Front

How is the gradient of a tangent on a reaction rate graph calculated?

Back

Gradient = difference in y / difference in x

Front

Which of the following is a method to measure the rate of a chemical reaction?

• Measuring the color of the solution
• Measuring the loss in mass of reactants
• Measuring the temperature change
• Measuring the pH level

Back

Measuring the loss in mass of reactants

Front

What is typically used to measure the volume of gas evolved over time in a reaction?

Back

A gas syringe

Front

In the reaction between marble chips and hydrochloric acid, which gas is produced?

Back

Carbon dioxide

Front

What is the typical method used for measuring the rate of reaction with magnesium and acid?

Back

Measuring the volume of gas evolved

Front

What is the dependent variable in the experiment involving sodium thiosulfate and hydrochloric acid?

Back

Time taken for the cross to disappear