15) What is the concentration (M) of HCl in a solution that is prepared by dissolving 25,5 g of HCl in 20.0L of water?(Assume volume does not change after adding HCL) A) 1.28 B) 0.0350 C) 35.0 D) 3.50times 10^-5 E) 14.0 Answer: B

To find the concentration of HCl in the solution, we need to use the formula:<br /><br />\[ \text{Concentration (M)} = \frac{\text{moles of solute}}{\text{volume of solution in liters}} \]<br /><br />First, we need to calculate the moles of HCl. The molar mass of HCl is 36.46 g/mol.<br /><br />\[ \text{Moles of HCl} = \frac{25.5 \text{ g}}{36.46 \text{ g/mol}} = 0.700 \text{ moles} \]<br /><br />Now, we can calculate the concentration:<br /><br />\[ \text{Concentration (M)} = \frac{0.700 \text{ moles}}{20.0 \text{ L}} = 0.0350 \text{ M} \]<br /><br />Therefore, the concentration of HCl in the solution is 0.0350 M, which corresponds to option B.