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Chapter 5 The Periodic Table | Exercise 5C

Question 5

a) Name the method by which alkali metals can be extracted.

b) What is the color of the flame of Sodium and Potassium?

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  • Solution

  • Transcript

a) Alkali metals can be extracted by electrolysis of their molten state.

b) The color of the flame of sodium is golden yellow, and the color of the flame of potassium is pale violet.

"hello dear student i'm sunita and from leader learning let's answer this question which is name the method by which alkali metals can be extracted so let's answer that first so i will write a over here so alkali metals can be extracted metals are extracted by electrolysis of of their molten chlorides or oxides for example lithium is extracted by electrolysis of a fused mixture of dry lithium chloride and potassium chloride now the reason why they cannot be extracted by other methods like reduction or by displacement or even by electrolysis of the aqueous solutions because one alkales themselves are strong reducing agents so they cannot be extracted by reduction then being highly reactive they cannot be displaced from their solutions by other elements and finally they cannot be extracted by electrolysis of aqueous solutions of their salts because hydrogen will be liberated at the cathode instead of the alkali metal right now second part of the question is what is the color of the flame of sodium and potassium so here we have a picture of the flames of sodium and potassium so this is sodium a bright yellow flame and potassium has a pale violet flame so let's write that the second answer is sodium has a has a bright yellow flame and potassium a pale violet flame so i hope this answers the question satisfactorily do drop in a comment if you have any doubts visit our channel for more homework solutions like this and subscribe to it for updates as well thank you"

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Question 5

a) Name the method by which alkali metals can be extracted.

b) What is the color of the flame of Sodium and Potassium?

  • Solution

  • Transcript

a) Alkali metals can be extracted by electrolysis of their molten state.

b) The color of the flame of sodium is golden yellow, and the color of the flame of potassium is pale violet.

"hello dear student i'm sunita and from leader learning let's answer this question which is name the method by which alkali metals can be extracted so let's answer that first so i will write a over here so alkali metals can be extracted metals are extracted by electrolysis of of their molten chlorides or oxides for example lithium is extracted by electrolysis of a fused mixture of dry lithium chloride and potassium chloride now the reason why they cannot be extracted by other methods like reduction or by displacement or even by electrolysis of the aqueous solutions because one alkales themselves are strong reducing agents so they cannot be extracted by reduction then being highly reactive they cannot be displaced from their solutions by other elements and finally they cannot be extracted by electrolysis of aqueous solutions of their salts because hydrogen will be liberated at the cathode instead of the alkali metal right now second part of the question is what is the color of the flame of sodium and potassium so here we have a picture of the flames of sodium and potassium so this is sodium a bright yellow flame and potassium has a pale violet flame so let's write that the second answer is sodium has a has a bright yellow flame and potassium a pale violet flame so i hope this answers the question satisfactorily do drop in a comment if you have any doubts visit our channel for more homework solutions like this and subscribe to it for updates as well thank you"

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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