Chlorine and chlorate

Last updated: 06/02/2020

WJEC A-Level Chemistry Unit 1.6 – The periodic table Chlorine and chlorate

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Question 1 of 25

1. Question
What is the definition of a disproportionation reaction?
- When an element is both oxidised and reduced
- When a redox reaction takes place
- When an element is reduced
- When an element is oxidised
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Question 2 of 25

2. Question
What group is chlorine in?
- 17
- 16
- 1
- 3
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Question 3 of 25

3. Question
What is another name for group 17 elements?
- Halogens
- Alkali metals
- Metal hydroxides
- Noble gases
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Question 4 of 25

4. Question
Which of the following is the molecular formula for chlorine?
- Cl $_2$
- Cl
- ClO
- Cl $_3$
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Question 5 of 25

5. Question
Which of the following is the molecular formula for hydrochloric acid?
- HCl
- CIO
- HCIO
- $H_2CIO$
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Question 6 of 25

6. Question
Which of the following is the molecular formula for chloric(I) acid?
- HCIO
- CIO
- HCl
- $H_2CIO$
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Question 7 of 25

7. Question
Which of the following is the molecular formula for sodium chlorate(I)?
- NaOCl
- NaO
- NaCl
- NaCIH
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Question 8 of 25

8. Question
Which of the following is the molecular formula for chlorate ion?
- ClO $^-$
- Cl $^-$
- HOCl $^-$
- ClO $^{2-}$
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Question 9 of 25

9. Question
What are the reaction conditions for sodium hydroxide when reacting with chlorine?
- Cold
- Warmed
- Refluxed
- Distilled
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Question 10 of 25

10. Question
Write the equation for the reaction between chlorine and sodium hydroxide.
- $2NaOH(aq) + Cl_2(aq) - > NaCl(aq) + NaOCl(aq) + H_2O(l)$
- $2NaOH(aq) + Cl_2(aq) - >NaCl(aq) + NaOCl(aq) + H_2$
- $2NaOH(aq) + Cl_2(aq)- >NaCl(aq) + HClO(aq) + H_2O(l)$
- $2NaOH(aq) + Cl_2(aq) - >2NaOCl(aq) + H_2O(l)$
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Question 11 of 25

11. Question
Which of the following products are produced when chlorine reacts with sodium hydroxide?
- Sodium chloride
- Hydrogen chloride
- Chloric acid
- Hydogen
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Question 12 of 25

12. Question
Which of the following products are produced when chlorine reacts with sodium hydroxide?
- Sodium chlorate(I)
- Chloride chlorate
- Chlorate(II)
- Sodium chlorate(II)
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Question 13 of 25

13. Question
Which of the following products are produced when chlorine reacts with sodium hydroxide?
- Water
- Chlorine hydroxide
- Chlorine
- Sodium
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Question 14 of 25

14. Question
What type of reaction is the reaction between chlorine and sodium hydroxide?
- Disproportionation
- Displacement
- Neutralisation
- Reversible
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Question 15 of 25

15. Question
During the reaction between chlorine and sodium hydroxide chlorine is oxidised, what is the change in oxidation number?
- 0 – +1
- +1 – 0
- +1 – 0
- -1 – 0
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Question 16 of 25

16. Question
During the reaction between chlorine and sodium hydroxide chlorine is reduced, what is the change in oxidation number?
- 0 – -1
- +2 – 0
- +1 – 0
- -1 – 0
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Question 17 of 25

17. Question
What type of compound forms when water reacts with acid?
- Acid
- Base
- Hydrocarbon
- Alkali
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Question 18 of 25

18. Question
When chlorine is reacted with water, how many acids are formed?
- 2
- 1
- 3
- 4
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Question 19 of 25

19. Question
What type of reaction is the reaction between chlorine and water?
- Reversible
- Salt reaction
- Neutralisation
- Displacement
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Question 20 of 25

20. Question
Name the two acids formed when water reacts with chlorine.
- Chloric(I) acid and hydrochloric acid
- Hydrochloric acid and benzoic acid
- Methyl chloride and chloric(I) acid
- Chloric(II) acid and hydrochloric acid
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Question 21 of 25

21. Question
Write the equation for the reaction between chlorine and water.
- $Cl_2(g) + H_2O(l) - > HCl(aq) + HOCl(aq)$
- $Cl_2(g) + H_2O(l) - > HCl(aq) + H_2(g)$
- $Cl_2(g) + H_2O(l) - > HCl(l) + HOCl(aq)$
- $Cl_2(g) + H_2O(l) - > H_2(g) + HOCl(aq)$
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Question 22 of 25

22. Question
In order to form chloric(I) acid, which of the following is reacted with chlorine?
- Water
- Sodium hydroxide
- Hydrochloric acid
- Hydrogen
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Question 23 of 25

23. Question
What is sodium chlorate(I) used for?
- For bleach
- For soap
- To make glue
- For perfumes
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Question 24 of 25

24. Question
In order to form hydrochloric acid, which of the following is reacted with chlorine?
- Water
- Sodium hydroxide
- Chloric(I) acid
- Hydrogen
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Question 25 of 25

25. Question
In order to make bleach, what must chlorine be reacted with?
- Sodium hydroxide
- Sodium chloride
- Hydrogen
- Water
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