Chemical Reaction Rate Quiz

What are the two methods used to measure the rate of a chemical reaction in the video?

• Beaker and test tube

• Burette and delivery tube

• Measuring cylinder and gas syringe

• Pipette and conical flask

What is the concentration of the hydrochloric acid used in the first method of measuring the rate of reaction?

• 1 mol per decimeter cubed

• 3 mol per decimeter cubed

• 2 mol per decimeter cubed

• 4 mol per decimeter cubed

What is the purpose of clamping the measuring cylinder in place about one centimeter off the bottom of the trough?

• To speed up the reaction

• To measure the temperature of the reaction

• To prevent air bubbles in the measuring cylinder

• To increase the pressure in the measuring cylinder

What is the alternative method mentioned for measuring the amount of gas produced in the reaction?

• Gas syringe

• Burette

• Pipette

• Measuring cylinder

What is the purpose of drawing a graph of the results?

• To measure the temperature of the reaction

• To calculate the volume of gas produced

• To compare different concentrations of hydrochloric acid

• To visualize the rate of reaction over time

Why is the magnesium considered the limiting reactant in the reaction?

• Because it is the most reactive element

• Because it is the reactant that is completely used up

• Because it is dissolved in the hydrochloric acid

• Because it is added first to the conical flask

What is a potential source of error mentioned in the reaction?

• The addition of magnesium to the conical flask

• The precision of the measuring cylinder

• The use of an inverted burette

• The use of a gas syringe

What is the purpose of using a pipette to add the final few drops of hydrochloric acid?

• To prevent the reaction from occurring

• To increase the concentration of the acid

• To ensure accurate measurement

• To speed up the reaction

What is the effect of using 2 mol per decimeter cubed hydrochloric acid compared to 1 mol per decimeter cubed?

• No reaction occurs

• No difference in the rate of reaction

• Faster rate of reaction

• Slower rate of reaction