Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table: Time / min 0 1 2 3 4 5 6 7 Volume of hydrogen / cm 3 0 14 23 31 38 40 40 40 What is the rate of reaction (in cm 3 of hydrogen per minute) during the first minute?

Reaction rate, is the speed at which a chemical reaction proceeds. This is expressed in terms of either the concentration of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time. We have given that, volume of hydrogen gas released in one minute time is 14 cm 3. Then, the rate of reaction during the first minute = Volume of hydrogen Time taken = 14 1 = 14 cm 3 /minute.

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table: Time / min 0 1 2 3 4 5 6 7 Volume of hydrogen / cm 3 0 14 23 31 38 40 40 40 What is the rate of reaction (in cm 3 of hydrogen per minute) during the second minute?

Reaction rate, is the speed at which a chemical reaction proceeds. This is expressed in terms of either the concentration of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time. We have given that, volume of hydrogen gas released in two minute time is 23 cm 3. Then, the rate of reaction during the second minute ? In the second minute, only 9 cm 3 gas is produced. 23 - 14 = 9 . So, the rate for the second minute is 9 cm 3 of hydrogen per minute.

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table: Time / min 0 1 2 3 4 5 6 7 Volume of hydrogen / cm 3 0 14 23 31 38 40 40 40 What is the rate of reaction (in cm 3 of hydrogen per minute) during the third minute?

Reaction rate, is the speed at which a chemical reaction proceeds. This is expressed in terms of either the concentration of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time. We have given that, volume of hydrogen gas released in three minute time is 31 cm 3. Then, the rate of reaction during the third minute is ? In the third minute, only 8 cm 3 gas is produced. 31 - 23 = 8 . So, the rate for the third minute is 8 cm 3 of hydrogen per minute.

EASY

Upper Secondary: IGCSE

IMPORTANT

Earn 100

The rate of the reaction between magnesium and dilute hydrochloric acid can be measured using this apparatus:

What is the purpose of the test-tube?

Important Questions on The Speed of a Reaction

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 1

The rate of the reaction between magnesium and dilute hydrochloric acid can be measured using this apparatus:

Question Image

What is the purpose of the gas syringe?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 1

The rate of the reaction between magnesium and dilute hydrochloric acid can be measured using this apparatus:

Question Image

How would you get the reaction to start?

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 2

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table:

Time / min	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$
Volume of hydrogen / ${cm}^{3}$	$0$	$14$	$23$	$31$	$38$	$40$	$40$	$40$

What does an excess of acid mean?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 2

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table:

Time / min	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$
Volume of hydrogen / ${cm}^{3}$	$0$	$14$	$23$	$31$	$38$	$40$	$40$	$40$

Plot a graph of the results.

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 2

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table:

Time / min	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$
Volume of hydrogen / ${cm}^{3}$	$0$	$14$	$23$	$31$	$38$	$40$	$40$	$40$

What is the rate of reaction (in ${cm}^{3}$ of hydrogen per minute) during the first minute?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 2

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table:

Time / min	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$
Volume of hydrogen / ${cm}^{3}$	$0$	$14$	$23$	$31$	$38$	$40$	$40$	$40$

What is the rate of reaction (in ${cm}^{3}$ of hydrogen per minute) during the second minute?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 2

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table:

Time / min	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$
Volume of hydrogen / ${cm}^{3}$	$0$	$14$	$23$	$31$	$38$	$40$	$40$	$40$

What is the rate of reaction (in ${cm}^{3}$ of hydrogen per minute) during the third minute?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Checkup on Chapter 10>Q 2

Some magnesium and an excess of dilute hydrochloric acid were reacted together. The volume of hydrogen produced was recorded every minute, as shown in the table:

Time / min	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$
Volume of hydrogen / ${cm}^{3}$	$0$	$14$	$23$	$31$	$38$	$40$	$40$	$40$

Why does the rate change during the reaction?

The rate of the reaction between magnesium and dilute hydrochloric acid can be measured using this apparatus: What is the purpose of the test-tube?

Important Questions on The Speed of a Reaction

Learn and Prepare for any exam you want !

The rate of the reaction between magnesium and dilute hydrochloric acid can be measured using this apparatus:

What is the purpose of the test-tube?