GCSE Edexcel Chemistry Identifying negative ions - Carbonates test: 2 (a) (i) Describe how you would

Question

2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water.

(ii) A test for chloride ions is carried out on the sodium chloride solution.
P, Q, R and S are involved in tests for ions.
P add silver nitrate solution to the solution
Q a white precipitate forms
R add sodium hydroxide solution to the solution
S add dilute nitric acid to the solution
Only three of these form part of the test for chloride ions.
Identify the three and place them in the order they occur in the test.

(b) The test for ammonium ions is

add sodium hydroxide solution to a solution of the salt
warm the mixture
test the ammonia gas given off with damp red litmus paper.

(i) Choose the formula of sodium hydroxide.
Put a cross (x) in the box next to your answer.

A KOH
B NaO
C NaOH
D SOH

(ii) Complete the sentence by putting a cross (x) in the box next to your answer.

When the ammonia gas is tested with damp red litmus paper, the litmus paper turns blue.

This shows that the ammonia gas is

A acidic
B alkaline
C neutral
D an indicator

(c) Two tests are carried out on a solid.

In a flame test, a yellow flame is seen.
When some dilute hydrochloric acid is added to the solid, a gas is evolved.
The gas turns limewater milky.

Give the name of the solid.

2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1

Worked Solution & Example Answer:2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1

Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water.

Identify the three and place them in the order they occur in the test.

Choose the formula of sodium hydroxide. Put a cross (x) in the box next to your answer.

Complete the sentence by putting a cross (x) in the box next to your answer.

Give the name of the solid.

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