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Question

.A compound ‘X’ is used in the kitchen for making crispy pakoras. Identify the compound and write its common name and chemical formula. Write the chemical equation of the process by which ‘X’ is produced. What is the nature of compound X? State one use of ‘X’ based on its nature. Name the powder or mixture obtained by mixing ‘X’ with tartaric acid. Why is this mixture/powder added to cakes?

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Solution

1) The compound used in Kitchen to make crispy pakoras is Sodium bicarbonate.So X is - NaHCO3. Common name is Baking soda2) When ammonia reacts with carbondioxide, sodium bicarbonate is produced. NH3 +H2O + CO2 NH4HCO3NH4HCO3 + NaCl NaHCO3 +NH4Cl3) The nature of the compound X is salt4) Sodium bicarbonate is used for acid indigestion by neutralising excess acid.5) Tartaric acid mixed with baking soda is called baking powder. C4H6O6 + 2 NaHCO3 Na2C4H4O6 + 2 CO2 + 2 H2OSodium bicarbonate liberate CO2 which makes the cakes to rise when baked

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