CHEMISTRY HIGH SCHOOL

Which two formulas represent Arrhenius acids?(1) CH3COOH and CH3CH2OH
(2) HC2H3O2 and H3PO4
(3) KHCO3 and KHSO4
(4) NaSCN and Na2S2O3

Answers

Answer 1
Answer:

Answer : The correct option is, (2) HC_2H_3O_2\text{ and }H_3PO_4

Explanation :

Arrhenius theory : It sates that an acid is a type of substance that ionizes in the water to give the hydronium ion or hydrogen ion (H^+) and a bases is a type of substance that ionizes in the water to give hydroxide ion (OH^-).

Or we can say that,

Arrhenius acid are those which can easily gives the hydrogen ion in a solution and Arrhenius base are those which can easily gives the hydroxide ion in a solution.

In option 1,CH_3COOH can easily gives the hydrogen ion but CH_3CH_2OH can not gives the hydrogen ion due to stronger O-H bonding. So, these formulas does not represent Arrhenius acids.

In option 2,CH_3COOH and H_3PO_4 can easily gives the hydrogen ion. So, these formulas represent Arrhenius acids.

In option 3,KHCO_3 and KHSO_4can not gives the hydrogen ion because both are the salts. So, these formulas does not represent Arrhenius acids.

In option 4,NaSCN and Na_2S_2O_3can not gives the hydrogen ion because no hydrogen present in the compound. So, these formulas does not represent Arrhenius acids.

Hence, (2) HC_2H_3O_2\text{ and }H_3PO_4 represent Arrhenius acids.
Answer 2
Answer: The answer is (2) HC2H3O2 and H3PO4.

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Answers

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Explanation :

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Answers

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Answers