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Standard XII

Chemistry

Arrhenius Acid

Find the one ...

Question

Find the one from the following which when placed into water will test as an acid solution?
I. $H C l_{(g)}$ $+ H_{2} O$
II. Excess $H_{3} O^{+} + H_{2} O$
III. $C u S O_{4 (s)} + H_{2} O$

I only

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III only

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I and II only

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II and III only

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I, II and III

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Solution

The correct option is C I, II and III
When I, II and III are placed into water will test as an acid solution.
I. $H C l_{(g)} + H_{2} O$ is an acidic solution as hydrochloric acid completely ionizes and gives hydrogen ions in solution.
II. Excess $H_{3} O^{+}$ $+ H_{2} O$ is acidic in nature as a solution has more number of hydronium ions than hydroxide ions.
III. $C u S O_{4 (s)}$ $+ H_{2} O$ solution is acidic in nature as copper sulphate is a salt of a weak base with a strong acid.

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Similar questions

Q. Three reactions involving

H_{3} P O_{4}

are given below:

(i)

H_{3} P O_{4} + H_{2} O ⇋ H_{3} O^{+} + H_{2} P O_{4}^{-}

(ii)

H_{2} P O_{4}^{-} + H_{2} O ⇋ H P O_{4}^{2 -} + H_{3} O^{+}

(iii)

H_{2} P O_{4}^{-} + O H^{-} \to H_{3} P O_{2} + O^{- 2}

In which of the above reactions does

H_{2} P O_{4}^{-}

act as an acid?

Q. Three reactions involving

H_{2} P O_{4}^{-}

are given below.
I.

H_{3} P O_{4} + H_{2} O \to H_{3} O^{+} + H_{2} P O_{4}^{-}

II.

H_{2} P O_{4}^{-} + H_{2} O \to H P O_{4}^{2 -} + H_{3} O^{+}

III.

H_{2} P O_{4}^{-} + O H^{-} \to H_{3} P O_{4} + O^{2 -}

In which of the above does

H_{2} P O_{4}^{-}

act as an acid?

Q. Study the following reactions and mark the correct properties shown by water :
(i)

S O_{3} + H_{2} O \to H_{2} S O_{4}

(ii)

C l_{2} O_{7} + H_{2} O \to 2 H C L O_{4}

(iii)

N a_{2} O + H_{2} O \to 2 N a O H

(iv)

C a o + H_{2} O \to C a (O H)_{2}

Q. Which choice or choices demonstrate amphoterism?
i.

H C l + H_{2} O \to H_{3} O^{+} + C l^{-}

and

H_{2} O + N_{3} \to O H^{-} + N H_{4}^{-}

ii.

H S^{-} + H C l \to C l^{-} + H_{2} S

and

H S^{-} + N H_{3} \to N H_{4}^{+} + S^{2 -}

iii.

H C l + N a O H \to N a C l + H_{2} O

and

N a C l + H_{2} O \to H C l + N a O H

Q. Three reactions involving

H_{2} P O_{4}^{-}

are given?
(i)

H_{2} P O_{4} + H_{2} O \to H_{3} O^{+} + H_{2} P O_{4}^{-}

(ii)

H_{2} P O_{4}^{-} + H_{2} O \to H P O_{4}^{2 -} + H_{3} O^{+}

(iii)

H_{2} P O_{4}^{-} + O H^{-} \to H_{3} P O_{4} + O^{2 -}

In which of the given does

H_{2} P O_{4}^{-}

act as n acid?

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Find the one from the following which when placed into water will test as an acid solution?I. HCl(g)+H2OII. Excess H3O++H2OIII. CuSO4(s)+H2O

Find the one from the following which when placed into water will test as an acid solution?
I. $H C l_{(g)}$ $+ H_{2} O$
II. Excess $H_{3} O^{+} + H_{2} O$
III. $C u S O_{4 (s)} + H_{2} O$