Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

State two chemical tests for the presence of water

Answers

1.By using cobalt[II]chloride paper,where it turns from blue to pink showing the presence of water.
2.Using anhydrous copper II sulphate paper,where the compound turn blue showing presence of water.

MICHAELONYINKWA answered the question on September 20, 2017 at 07:59

Answer Attachments

Next: (a)Give reasons why manual work is important in Kenya today. (b)Activities that the youth should engage in during their leisure time

Previous: (a)What are Consequences of denying employees rest (b)Give reasons why Christians pray

View more Chemistry Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

Sulphur is extracted from underground deposits by frasch process. State two physical properties of Sulphur that makes it possible to be extracted through this process. (Solved)

Sulphur is extracted from underground deposits by frasch process. State two physical properties of Sulphur that makes it possible to be extracted through this process.

Date posted: September 19, 2017 . Answers (1)
Name a suitable drying agent for hydrogen chloride gas (Solved)

Name a suitable drying agent for hydrogen chloride gas

Date posted: September 19, 2017 . Answers (1)
Highlight the steps followed when lighting a Bunsen burner (Solved)

Highlight the steps followed when lighting a Bunsen burner

Date posted: September 18, 2017 . Answers (1)
5.0g of calcium carbonate were allowed to react with 25cm³ of 1.0M hydrochloric acid until there was no further reaction. Calculate the mass of calcium... (Solved)

5.0g of calcium carbonate were allowed to react with 25cm³ of 1.0M hydrochloric acid until
there was no further reaction. Calculate the mass of calcium carbonate that remained
unreacted(Ca = 40, C = 12, O = 16).

Date posted: September 18, 2017 . Answers (1)
Dry carbon (II) oxide gas was passed over heated lead (II) oxide. (a) Write an equation for the reaction (b) Give one industrial application of the above... (Solved)

Dry carbon (II) oxide gas was passed over heated lead (II) oxide.
(a) Write an equation for the reaction
(b) Give one industrial application of the above reaction.
(c) Name another gas that can be used in the above reaction.

Date posted: September 18, 2017 . Answers (1)
a)Why is the percentage of carbon(IV)oxide in the atmosphere fairly constant? (b)Calculate the volume of carbon(IV)oxide in 8,000 m³ of air contained in a hall. (Solved)

a)Why is the percentage of carbon(IV)oxide in the atmosphere fairly constant?
b)Calculate the volume of carbon(IV)oxide in 8,000 m³ of air contained in a

Date posted: September 18, 2017 . Answers (1)
Which two elements will react more vigorously with each other between fluorine, neon, sodium, magnesium? (Solved)

Which two elements will react more vigorously with each other between fluorine, neon, sodium, magnesium?

Date posted: September 17, 2017 . Answers (1)
a)Given that the mass of copper obtained in an o extraction was 210kg, determine the percentage purity of the ore used (copper pyrites) if 810kg... (Solved)

a)Given that the mass of copper obtained in an o extraction was 210kg, determine the percentage purity of the ore used (copper pyrites) if 810kg of it was fed to the 1st roasting furnace. (Cu = 63.5, Fe = 56, S = 32.0)

b)Give 2 effects that the process above could have on the environment.

Date posted: September 14, 2017 . Answers (1)
a)Using ionic equation explain how sodium carbonate can be used to soften hard water.(b)Other than softening of hard water give 2 other uses of sodium... (Solved)

a)Using ionic equation explain how sodium carbonate can be used to soften hard water.
b)Other than softening of hard water give 2 other uses of sodium carbonate.

Date posted: September 14, 2017 . Answers (1)
Predict the pH of the oxide of sulphur in water. (Solved)

Predict the pH of the oxide of sulphur in water.

Date posted: September 14, 2017 . Answers (1)
Explain why sulphur has a higher boiling point compared to that of oxygen. (Solved)

Explain why sulphur has a higher boiling point compared to that of oxygen.

Date posted: September 14, 2017 . Answers (1)
A mixture consists of sulphur powder and iron filings.(i) Describe how to obtain sulphur from the mixture using methylbenzene. (Solved)

(i) Describe how to obtain sulphur from the mixture using methylbenzene. (3 marks)

(ii) Is the mixture homogeneous or heterogeneous? Explain. (2 marks)

Date posted: September 13, 2017 . Answers (1)
What is the importance of the shape of a conical flask? (Solved)

What is the importance of the shape of a conical flask?

Date posted: September 13, 2017 . Answers (1)
Using dot and cross to represent electrons draw a diagram to illustrate bonding in the sulphide of a substance with a pH of 2.2 (Solved)

Using dot and cross to represent electrons draw a diagram to illustrate bonding in the sulphide of a substance with a pH of 2.2

Date posted: September 10, 2017 . Answers (1)
Study the flow chart below and answer the questions that follow. (Solved)

Study the flow chart below and answer the questions that follow.

(i) State the conditions necessary for fermentation of glucose to take place.
(ii) State the reagent that can be used to carry out process S.
(iii) Identify gases P and T.

Date posted: June 7, 2017 . Answers (1)
Study the flow chart below and answer the questions that follows. (Solved)

Study the flow chart below and answer the questions that follows.

(a) Name the process in step I.
(b) Identify the reagent in step II.
(c) Give one use of ethane.

Date posted: June 7, 2017 . Answers (1)
The table below shows the relative molecular masses and boiling points of pentane and ethanoic acid. (Solved)

The table below shows the relative molecular masses and boiling points of pentane and ethanoic acid.

Explain the large difference in boiling point between ethanoic acid and pentane.

Date posted: June 7, 2017 . Answers (1)
The structure below represents a type of a cleansing agent. (Solved)

The structure below represents a type of a cleansing agent.

Describe how the cleansing agent removes grease from a piece of cloth.

Date posted: June 7, 2017 . Answers (1)
Study the flow chart below and use it to answer the questions that follow: (Solved)

Study the flow chart below and use it to answer the questions that follow:

(i) Identify the organic compound K.
(ii) Write the formula of M
(iii) Give one reagent that can be used in:
(I) Step I; (II) step II

Date posted: June 7, 2017 . Answers (1)
Study the flow chart below and answer the questions that follow. (Solved)

Study the flow chart below and answer the questions that follow.

(i) (I) What is observation will be made in step I?
(II) Describe a chemical test that can be carried out to show the identity of compound C.
(ii) Give the names of the following: I. E II. Substance D.

Date posted: June 7, 2017 . Answers (1)