Question

ASSERTION :Sodium and potassium are highly reactive metals. REASON: Sodium and potassium are stored under water. a) Both A and R are true and R is the correct explanation of A. b) Both A and R are true but R is not the correct explanation of A. c) A is true but R is false. d) A is false but R is true. e) Both A and R are false. *

Answer 1

Answer:

Option-b)

Explanation:

Potassium and sodium react with water because sodium and potassium are highly reactive.

Na and K liberate H2​ on reacting with water because very reactive metal displaces hydrogen and form metal hydroxide.

Potassium2K​+2H2​O→Potassium hydroxide2KOH​+H2​

Sodium2N​+2H2​O→Sodium hydroxide2NaOH​+H2​

Reactive metal+water→Metal hydroxide+Hydrogen

Both Assertion and Reason are correct, but Reason is not the correct explanation for Assertion.

Answer 2

Answer:

Optipn b is correct buddy

Explanation:

Potassium and sodium react with water because sodium and potassium are highly reactive.

Na and K liberate H2 on reacting with water because very reactive metal displaces hydrogen and form metal hydroxide.

( Potassium)    2K  +2H  2 O→ ( Potassium) hydroxide +H  2

​ (Sodium) 2N  +2H2 O→  (Sodium hydroxide) 2NaOH +H  2

Reactive metal+water→Metal hydroxide+Hydrogen

Therefore Both Assertion and Reason are correct, but Reason is not the correct explanation for Assertion.

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