Question

Calculate the difference in the molecular formula and molecular masses for 1.) ch3oh and c2h5oh , 2.) c2h5oh and c3h7oh , 3.) c3h7oh and c4h9oh​

Answer 1

Answer:

But there is only difference in which type of alkyl is added to it

CH3OH - 12+3×1+16+1 = 32(approx.)

C2H5OH - 12×2+ 1×5 + 16 + 1 = 46(approx.)

C3H7OH - 3×12+ 7× 1 + 16 + 1 = 60(approx.)

C4H9OH - 4×12 + 9×1 + 16 + 1 = 74(approx.)

Explanation:

Answer 2

(1) CH₃OH and C₂H₅OH

• In CH₃OH, the general molecular formula is CH₄O and the molecular mass will be 12+4+16 = 32 g.

• In C₂H₅OH, the general molecular formula is C₂H₆O and the molecular mass will be 24+6+16 = 46 g.

• In total, there is a difference of CH₂ and a difference of 14 g mass.

(2) C₂H₅OH and C₃H₇OH

• In C₂H₅OH, the general molecular formula is C₂H₆O and the molecular mass will be 24+6+16 = 46 g.

• In C₃H₇OH, the general molecular formula is C₃H₈O and the molecular mass will be 36+8+16 = 60 g.

• In total, there is a difference of CH₂ and a difference of 14 g mass.

(3) C₃H₇OH and C₄H₉OH

• In C₃H₇OH, the general molecular formula is C₃H₈O and the molecular mass will be 36+8+16 = 60 g.

• In C₄H₉OH, the general molecular formula is C₄H₁₀O and the molecular mass will be 48+10+16 = 74 g.

• In total, there is a difference of CH₂ and a difference of 14 g mass.