Reactant Product A 2 Cl - Cl 2 B Cl - ClO - C ClO 3 - Cl 2 D ClO - ClO 3 - Which conversion of reactant to product, A to D, involves the greatest change in oxidation state?

The oxidation state change in each conversion: (The oxidation state of chlorine is given above chlorine in each reactant and product) A) 2 Cl - - 1 to Cl 2 0 . The oxidation state change is of 0 - - 1 = 1 . B) Cl - - 1 to Cl + 1 O - - 2 . The oxidation state change is of + 1 - - 1 = 2 . C) Cl + 5 O 3 - - 2 to Cl 2 0 . The oxidation state change is of 5 - 0 = 5 . D) Cl + 1 O - - 2 to Cl + 5 O 3 - - 2 . The oxidation state change is of + 5 - + 1 = 4 . Hence, the greatest change (of 5 ) in oxidation state of chlorine is in conversion C.

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AS and A Level

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Astatine ( $At$ ) lies below iodine at the bottom of Group $17$ . Discuss and predict the vigour of its reaction with hydrogen.

Important Questions on Group 17

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AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>Question>Q 4

Astatine ( $At$ ) lies below iodine at the bottom of Group $17$ . Discuss and predict the thermal stability of its hydride.

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AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>Question>Q 4

Explain why chlorine is a more powerful oxidising agent than bromine.

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AS and A Level

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Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>Question>Q 5

You suspect that a solid compound might be potassium bromide. Describe how you would test your idea. Then describe the positive results you would get if you were correct.

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AS and A Level

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Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>Question>Q 5

Working with a partner, discuss what you would see in a test tube in which concentrated sulfuric acid is added drop-wise to solid potassium iodide that you would not see if the acid was added to potassium chloride.

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AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>Question>Q 5

Write equations, including state symbols to describe the reactions taking place in the test tube between concentrated sulfuric acid and potassium iodide.

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AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>Question>Q 5

Decide with your partner which one of the following ions is the strongest reducing agent:

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AS and A Level

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Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>EXAM-STYLE QUESTIONS>Q 1

	Reactant	Product
A	$2 {Cl}^{-}$	${Cl}_{2}$
B	${Cl}^{-}$	${ClO}^{-}$
C	${ClO}_{3}^{-}$	${Cl}_{2}$
D	${ClO}^{-}$	${ClO}_{3}^{-}$

Which conversion of reactant to product, A to D, involves the greatest change in oxidation state?

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 12 - Group 17>EXAM-STYLE QUESTIONS>Q 1

	Reactant	Product
A	$2 {Cl}^{-}$	${Cl}_{2}$
B	${Cl}^{-}$	${ClO}^{-}$
C	${ClO}_{3}^{-}$	${Cl}_{2}$
D	${ClO}^{-}$	${ClO}_{3}^{-}$

How many of the changes in the table are examples of oxidation?

Astatine (At) lies below iodine at the bottom of Group 17. Discuss and predict the vigour of its reaction with hydrogen.

Important Questions on Group 17

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Astatine ( $At$ ) lies below iodine at the bottom of Group $17$ . Discuss and predict the vigour of its reaction with hydrogen.