Study the given Venn diagram carefully
Identify 1, 2, and 3

1- Do not react with metals; 1- React with litmus; 3- Do not react with carbonates

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1- Are sour in taste; 2- React with carbonates; 3- Are soapy to touch

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1- Have

{O H}^{-} > H^{+}

; 2- Have

{O h}^{-} = H^{+}

; 3- Have

H^{+} > {O H}^{-}

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1- React with carbonates to form

{C O}_{2}

gas; 2- Can be identified by using indicators; 3- Turn China rose indicator green

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Solution

The correct option is C 1- React with carbonates to form ${C O}_{2}$ gas; 2- Can be identified by using indicators; 3- Turn China rose indicator green
Acids react with carbonates to form ${C O}_{2}$ gas, bases turn China rose indicator green and both acids and bases can be identified by using indicators.

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