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Which of these is the formula of a hydrocarbon? Put a cross (X) in the box next to your answer - Edexcel - GCSE Chemistry - Question 3 - 2016 - Paper 1
Question 3
Which of these is the formula of a hydrocarbon? Put a cross (X) in the box next to your answer. A CₓHₓCl B CₓH₆ C CₓH₀ D NaHCO₃
Worked Solution & Example Answer:Which of these is the formula of a hydrocarbon? Put a cross (X) in the box next to your answer - Edexcel - GCSE Chemistry - Question 3 - 2016 - Paper 1
Step 1
Which of these is the formula of a hydrocarbon?
Answer
The formula of a hydrocarbon must consist solely of hydrogen (H) and carbon (C) atoms.
- Option A: CₓHₓCl - This is not a hydrocarbon as it contains chlorine (Cl).
- Option B: CₓH₆ - This is a hydrocarbon formula as it contains only carbon and hydrogen.
- Option C: CₓH₀ - This is not a valid hydrocarbon formula, as it implies no hydrogen atoms.
- Option D: NaHCO₃ - This is not a hydrocarbon, as it contains sodium (Na) and oxygen (O).
Thus, the correct answer is B: CₓH₆.