what is the molar concentration of 2-methylbutanol in its neat solution?

Expert Solution

The molecular formula of 2-methylbutanol is C₅H₁₂O

Molar mass of C₅H₁₂O = (5xAt.mass of C ) + (12 x At.mass of H ) + At.mass of O

= (5x12)+(12x1)+ 16

= 88 g/mol

We know that the density of C₅H₁₂O is , d = 0.809 g / mL

= 0.809 kg/L

So 1 L of the solution weighs 0.809 kg = 809 g
Therefore the number of moles of C₅H₁₂O in 1L of the solution is , n = mass/molar mass

= 809 g / 88 (g/mol)

= 9.193 mol
Therefore the concentration of C₅H₁₂O is , M = number of moles / volume of solution in L

= 9.193 mol / 1L

= 9.193 M

Therefore the molar concentration of 2-methylbutanol in its neat solution is 9.193 M

queen_honey_blossom answered 2 years ago

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