JAMB 2025 Chemistry · Question 24
The acid used in making baking soda and soft drink is
Options
- A.tartaric acid
- B.fatty acid
- C.boric acid
- D.citric acid
Answer: A. tartaric acid
Explanation written with AI and checked against the answer key
1. Analyze the question
The question asks for the specific acid used in the production of baking soda and soft drinks. We need to identify which of the listed acids is commonly used as a food additive for these purposes.
2. Explain the concept
- Baking Soda (Sodium Bicarbonate): In baking, an acid is required to react with sodium bicarbonate to release carbon dioxide gas, which makes dough rise. Tartaric acid (often in the form of cream of tartar) is the classic acid used in baking powder formulations.
- Soft Drinks: While citric acid is also used in soft drinks, tartaric acid is specifically noted in chemistry curricula for its dual role in both the baking industry (as a leavening agent component) and the beverage industry (as an acidulant to provide a sharp, tart taste).
3. Show the solution
- Tartaric acid is a naturally occurring organic acid found in grapes and other fruits. It is widely used in the food industry as an acidulant and a leavening agent.
- Fatty acids are components of fats and oils, not typically used as leavening agents or drink acidulants.
- Boric acid is toxic and is used as an antiseptic or insecticide; it is definitely not used in food production.
- Citric acid is very common in soft drinks, but in the context of standard chemistry examinations (like JAMB), tartaric acid is the specific answer associated with the combination of baking soda applications and soft drink production.
4. Identify the answer
Comparing the options, tartaric acid is the correct chemical compound associated with these specific industrial food applications in the context of your syllabus.
5. Tip
When you see questions about "acids in food," remember:
- Tartaric acid: Baking powder and soft drinks.
- Citric acid: Citrus fruits and soft drinks.
- Acetic acid: Vinegar.
- Lactic acid: Sour milk/yoghurt.
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