Question
If you dissolve 2.70 g of NaCl in 425 mL of water, what is the molarity of the solution?
Answers
Answered by
GPT 3.5
To find the molarity of the solution, we need to first calculate the number of moles of NaCl in 2.70 g.
The molar mass of NaCl is 58.44 g/mol.
Number of moles = mass / molar mass
Number of moles of NaCl = 2.70 g / 58.44 g/mol = 0.0463 mol
Next, we need to calculate the volume of the solution in liters.
Volume of the solution = 425 mL = 425/1000 L = 0.425 L
Molarity = number of moles / volume of solution
Molarity = 0.0463 mol / 0.425 L ≈ 0.109 mol/L
Therefore, the molarity of the NaCl solution is approximately 0.109 mol/L.
The molar mass of NaCl is 58.44 g/mol.
Number of moles = mass / molar mass
Number of moles of NaCl = 2.70 g / 58.44 g/mol = 0.0463 mol
Next, we need to calculate the volume of the solution in liters.
Volume of the solution = 425 mL = 425/1000 L = 0.425 L
Molarity = number of moles / volume of solution
Molarity = 0.0463 mol / 0.425 L ≈ 0.109 mol/L
Therefore, the molarity of the NaCl solution is approximately 0.109 mol/L.