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Which of the four test tubes containing the following chemicals shows the brisk effervescence when dilute acetic acid was added to them ?
i) KOH ii) ${NaHCO}_{3}$ iii) $K_{2} {CO}_{3}$ iv) NaCl

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i & ii

ii & iii

i & iv

ii & iii

answer is B.

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Detailed Solution

Both are having same answer

${CH}_{3} COOH + {NaHCO}_{3} \to {CH}_{3} COONa + H_{2} O + {CO}_{2} ↑$

${2CH}_{3} COOH + K_{2} {CO}_{3} \to 2 {CH}_{3} COOK + H_{2} O + {CO}_{2} ↑$

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