From simple questions to complex issues, IDNLearn.com has the answers you need. Discover prompt and accurate answers from our experts, ensuring you get the information you need quickly.

What is the molar concentration of a 32.5 wt% sucrose solution? The density of the solution is 1.139 g/mL.

Sagot :

What is the molar concentration of a 32.5 wt% sucrose solution? The density of the solution is 1.139 g/mL.

The molar concentration of a 32.5wt% sucrose solution is 1.08M

  • The wt% is the mass of solute in 100g of a solution. Hence, if sucrose contains 32.5wt% solution, this means there are:

32.5 ÷ 100 = 0.325g of sucrose in the solution.

  • The molar concentration can be calculated as follows:

Molar conc. = Density (g/L) × weight of sucrose (g) ÷ molecular mass of sucrose (g/mol)

  1. Density of solution = 1.139g/mL = 1.139 × 1000 = 1139g/L
  2. Molar mass of sucrose (C12H22O11) = 12(12) + 1(22) + 16(11)

= 144 + 22 + 176

= 342.3g/mol

Molar conc. = (1139g/L × 0.325) ÷ 342.3g/mol

Molar conc. = 370.18 ÷ 342.3

Molar conc. = 1.08M or mol/L

Therefore, the molar concentration of a 32.5wt% sucrose solution is 1.08M.

Learn more at: https://brainly.com/question/13385951?referrer=searchResults