The concentration (M)of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C₂H₆O is ________ M.The density of the solution is 0.79 g/mL. A)21 B)0.93 C)0.58 D)6.0 × 10^-4 E)1.72

Question

Quizplus · Accepted Answer

First, we need to calculate the amount of solution we have:

200 g (density of 0.79 g/mL) = 252.53 mL

Next, we need to convert the mass of HCl to moles:

5.5 g HCl / 36.46 g/mol = 0.151 mol HCl

Finally, we can calculate the concentration:

Concentration (M) = moles / volume (in liters)
Concentration (M) = 0.151 mol / 0.25253 L = 0.598 M

Rounding to two significant figures, the answer is 0.58 M, which corresponds to choice (C).

The Concentration (M)of HCl in a Solution Prepared by Dissolving