Which of the following compounds transforms baking soda into baking powder?
(a) KCl
(b) KHCO₃
(c) NaHCO₃
(d) KHC₄H₄O₆
Answers
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The answer is (d) KHC4H4O6
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Answer:
Explanation:
Baking soda can be converted into baking powder by adding tartaric acid and starch. The tartaric acid has the formula as C4H6O6
For example, in baking a cake, tartaric acid is added to neutralize the bitterness that is produced by the baking powder. Also when baking powder is mixed with water, the sodium hydrogen carbonate reacts with the tartaric acid to evolve carbon dioxide gas that gets trapped in the wet dough and bubbles out slowly making the cake to rise. This in return gives the cake a 'soft and spongy' medium, thus endowing it with the light and fluffy texture. The equation which takes place during the process is -
NaHCO3 + H+ → Na+ + CO2 + H2O
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