Which pair of species have same percentage of carbon? (A) CH3COOH and

1.	Which pair of species have same percentage of carbon? (A) CH3COOH and C6H12O6 (B) CH3COOH and C2H5OH (C) HCOOCH3 and C12H22O11 (D) C6H12O6 and C12H22O11
Answer» Correct option: (A) CH₃COOH and C₆H₁₂O₆ Molecular mass of CH₃COOH = 60 ∴ % of C in CH₃COOH = \(\cfrac{24}{60}\) x 100 = 40% Similarly, Molecular weight of C₆H₁₂O₆ = 180 ∴ % of C in C₆H₁₂O₆ = \(\cfrac{72}{180}\) x 100 = 40%

Which pair of species have same percentage of carbon? (A) CH3COOH and C6H12O6 (B) CH3COOH and C2H5OH (C) HCOOCH3 and C12H22O11 (D) C6H12O6 and C12H22O11

Answer»

Correct option: (A) CH₃COOH and C₆H₁₂O₆

Molecular mass of CH₃COOH = 60

∴ % of C in CH₃COOH = \(\cfrac{24}{60}\) x 100 = 40%

Similarly,

Molecular weight of C₆H₁₂O₆ = 180

∴ % of C in C₆H₁₂O₆ = \(\cfrac{72}{180}\) x 100 = 40%