What are the concentrations in mass of the following solutions:
a) a 200mL aqueous solution containing 4.26g sodium solfate.
b) a 2.00 L aqueous solution containing 107.0g ammonium chloride NH4Cl.
Plz can give me someone the answers for BOTH and the steps how you did it plzzzzzz :)
Don't we need the density? I don't know the mass of 200 mL of solution.
Sure! I can help you with that. To find the concentration in mass of a solution, we need to calculate the mass of the solute (substance dissolved in the solution) per unit volume of the solution.
a) Let's start with the first question: a) a 200mL aqueous solution containing 4.26g sodium sulfate.
Step 1: Convert the volume of the solution from milliliters (mL) to liters (L).
200 mL = 200 mL / 1000 = 0.2 L
Step 2: Calculate the concentration in mass (mass/volume).
Concentration = mass of solute (sodium sulfate) / volume of solution
Concentration = 4.26 g / 0.2 L = 21.3 g/L
So, the concentration of the sodium sulfate solution is 21.3 g/L.
b) Now, let's move on to the second question: b) a 2.00 L aqueous solution containing 107.0g ammonium chloride NH4Cl.
Step 1: Convert the mass of the solute from grams (g) to kilograms (kg).
107.0 g = 107.0 g / 1000 = 0.107 kg
Step 2: Calculate the concentration in mass (mass/volume).
Concentration = mass of solute (ammonium chloride) / volume of solution
Concentration = 0.107 kg / 2.00 L = 0.054 kg/L
So, the concentration of the ammonium chloride solution is 0.054 kg/L.
I hope this helps!