Factors affecting reaction rate

Factors affecting reaction rate - Set 1

Report 1 / 5

Table below shows the observations obtained when three types of metal powder react with oxygen.

Choose the correct sequence of the reactivity of the metals in descending order.

X, Z, Y
X, Y, Z
Y, X, Z
Z, Y, X

Difficulty Level: Easy

Factors affecting reaction rate - Set 1

Report 2 / 5

Which of the following factors does not affect the rate of reaction?

Presence of catalyst
Volume of solution
Concentration of solution
Pressure of solution

Difficulty Level: Easy

Factors affecting reaction rate - Set 1

Report 3 / 5

Solid sodium reacts so vigorously with acid solutions that an explosion may occur.

How can this reaction be slowed down so that it is safe for students to carry out this experiment in the laboratory?

	Sodium solid	Acid solution	Acid solution temperature
A	Small fragments	High concentration	High
B	Large fragments	Low concentration	Low
C	Small fragments	Low concentration	Low
D	Large fragments	High concentration	High

Difficulty Level: Easy

Factors affecting reaction rate - Set 1

Report 4 / 5

A sample of lead(II) carbonate is placed in a crucible and heated until no further change occurs.

The crucible and its contents are weighed every one minute. Which of the following graphs shows the change in mass of the crucible and its contents with time?

Difficulty Level: Hard

Factors affecting reaction rate - Set 1

Report 5 / 5

Adila conducted several sets of experiments to study the reaction rate of the reaction between marble and nitric acid at room temperature and pressure.

Set I	1 g marble lump + 50 cm³ nitric acid 1.0 mol/dm³
Set II	1 g marble powder + 50 cm³ nitric acid 1.0 mol/dm³
Set III	1 g marble chunk + 50 cm³ nitric acid 2.0 mol/dm³
Set IV	1 g marble powder + 50 cm³ nitric acid 2.0 mol/dm³

Which reaction occurs the fastest?

Set I
Set II
Set III
Set IV

Difficulty Level: Hard