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‘Methanal (HCHO), ethanoic acid (CH₃COOH) and glucose (C₆H₁₂O₆) all have the same empirical formula.’ Is the statement above true or false? Explain. - Leaving Cert Chemistry - Question g - 2021
Question g
‘Methanal (HCHO), ethanoic acid (CH₃COOH) and glucose (C₆H₁₂O₆) all have the same empirical formula.’ Is the statement above true or false? Explain.
Worked Solution & Example Answer:‘Methanal (HCHO), ethanoic acid (CH₃COOH) and glucose (C₆H₁₂O₆) all have the same empirical formula.’ Is the statement above true or false? Explain. - Leaving Cert Chemistry - Question g - 2021
Step 1
Determine the Empirical Formula for Each Compound
Answer
-
Methanal (HCHO):
- The molecular formula is C₁H₁O₁.
- The empirical formula is also CH₂O since we can divide the subscripts by 1.
-
Ethanoic Acid (CH₃COOH):
- The molecular formula is C₂H₄O₂.
- The empirical formula is also CH₂O by dividing the subscripts by 2.
-
Glucose (C₆H₁₂O₆):
- The molecular formula is C₆H₁₂O₆.
- The empirical formula is CH₂O since all subscripts can be divided by 6.
Step 2
Step 3