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Question

Bubbles are seen on adding lemon juice to baking soda. Why?


Solution

Bubbles are seen on adding lemon juice to baking soda because lemon juice is citric acid and baking soda is sodium bicarbonate. On adding lemon juice in baking soda, we add acid and baking soda sodium bicarbonate. On adding lemon juice in baking soda, we add acid in the base then neutralization reaction is taking place resulting in the formation of salt, water, and brisk effervescence of carbon-dioxide. This $$CO_{2}$$ is released in the form of bubbles.

$$H_{3}C_{6}H_{5}O_{7}(aq) + 3 NaHCO_{3}(aq) \longrightarrow Na_{3}C_{6}H_{5}O_{7}(aq) + 3H_{2}O(l) + 3CO_{2}(g)$$

$$ citric\ acid + baking\ soda \longrightarrow salt + water + carbon\ dioxide$$

Chemistry

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