Which of the following lists contains ONLY basic substances?
(A) Oven cleaner, urine, vinegar
(B) Lemonade, drain cleaner, blood
(C) Baking soda, ammonia, sea water
(D) Antacid, dishwashing detergent, lemon juice - HSC - SSCE Chemistry - Question 3 - 2011 - Paper 1
Question 3
Which of the following lists contains ONLY basic substances?
(A) Oven cleaner, urine, vinegar
(B) Lemonade, drain cleaner, blood
(C) Baking soda, ammonia, sea wat... show full transcript
Worked Solution & Example Answer:Which of the following lists contains ONLY basic substances?
(A) Oven cleaner, urine, vinegar
(B) Lemonade, drain cleaner, blood
(C) Baking soda, ammonia, sea water
(D) Antacid, dishwashing detergent, lemon juice - HSC - SSCE Chemistry - Question 3 - 2011 - Paper 1
Step 1
Identify basic substances
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Answer
To determine which lists contain only basic substances, we first need to understand what constitutes a basic substance. Basic substances typically have a pH greater than 7 and can neutralize acids.
Step 2
(A) Oven cleaner, urine, vinegar
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Answer
Oven cleaner is usually basic; however, urine is mildly acidic and vinegar is definitely acidic. Hence, this option contains non-basic substances.
Step 3
(B) Lemonade, drain cleaner, blood
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Answer
Lemonade is acidic, blood is slightly basic, and drain cleaner is usually very basic. This list does not consist of only basic substances.
Step 4
(C) Baking soda, ammonia, sea water
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Answer
Baking soda (sodium bicarbonate) and ammonia (ammonium hydroxide) are known basic substances. Sea water is generally slightly basic due to the presence of dissolved salts, particularly sodium and magnesium. Hence, this option contains only basic substances.
Step 5
(D) Antacid, dishwashing detergent, lemon juice
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Answer
Antacid is basic, but lemon juice is acidic. Therefore, this list does not contain only basic substances.
