Question

Effect of solution concentration on reaction rate. The molecular formula for ascorbic acid is C₆H₈O₆ , and you used 6g in this experiment. Please calculate the molarity of the ascorbic acid. Now calculate the concentration in miles per drop (assume 1mL=20drops).

a) Molarity: 0.1mol/L, Concentration in miles per drop: 0.00021mol/drop
b) Molarity: 0.2mol/L, Concentration in miles per drop: 0.00042mol/drop
c) Molarity: 0.5mol/L, Concentration in miles per drop: 0.00105mol/drop
d) Molarity: 0.05mol/L, Concentration in miles per drop: 0.000105mol/drop

Answer 1

The molarity of the ascorbic acid solution is 0.034 M, and the concentration in miles per drop is approximately 0.00017 mol/drop.

Step-by-step explanation:

The molarity of a solution is calculated by dividing the number of moles of solute by the volume of the solution in liters. In this case, we have 6 grams of ascorbic acid (C₆H₈O₆).

To calculate the moles of ascorbic acid, we need to determine the molar mass of C₆H₈O₆. It is 176.13 g/mol.

Molarity = Moles of ascorbic acid/Volume of solution (in L)

Molarity = (6g / 176.13 g/mol) / (1 L) = 0.034 M (rounded to 3 decimal places).

To calculate the concentration in miles per drop, we first need to convert mL to drops. Assuming 1 mL = 20 drops, the volume of the solution is 1 mL.

Concentration in miles per drop = Moles of ascorbic acid/Volume of solution (in drops)

Concentration in miles per drop ≈ (0.034 mol / 1 L) / (20 drops/mL × 1 mL) = 0.00017 mol/drop.