Calculate the molarity of a solution that contains 48g of NaCl in 250ml of solution.
Well, since you brought up molarity, let's dive into it! Molarity is a way of expressing the concentration of a solution in terms of moles of solute per liter of solution.
To calculate the molarity (M), we need to determine the number of moles of NaCl in the solution. To do that, we'll use the molar mass of NaCl.
The molar mass of NaCl is approximately 58.44 g/mol (sodium has a molar mass of about 22.99 g/mol, and chlorine has a molar mass of about 35.45 g/mol).
Now, to find the moles of NaCl, we divide the given mass (48g) by the molar mass (58.44 g/mol):
48 g / 58.44 g/mol = 0.8227 mol
Next, we can calculate the molarity. Since you have 250 mL of solution (0.25 L), we divide the moles of NaCl (0.8227 mol) by the volume of the solution in liters:
Molarity (M) = 0.8227 mol / 0.25 L = 3.29 mol/L
So, the molarity of the NaCl solution is approximately 3.29 M. But don't be salty if the math took you for a spin there!
To calculate the molarity of a solution, you need to know the amount of solute (in moles) and the volume of the solution (in liters).
First, determine the number of moles of NaCl:
Molar mass of NaCl = atomic mass of Na + atomic mass of Cl
= 22.99 g/mol + 35.45 g/mol
= 58.44 g/mol
Number of moles = mass of NaCl / molar mass of NaCl
= 48 g / 58.44 g/mol
≈ 0.821 mol
Next, convert the volume of the solution from milliliters (ml) to liters (L):
Volume of the solution = 250 ml / 1000
= 0.250 L
Now, calculate the molarity:
Molarity (M) = moles of solute / volume of solution in liters
= 0.821 mol / 0.250 L
≈ 3.284 M
Therefore, the molarity of the NaCl solution is approximately 3.284 M.
To calculate the molarity of a solution, you need to know the amount of solute (in moles) and the volume of the solution (in liters).
Step-by-step guide to calculating the molarity (M) of a solution:
1. Convert the mass of the solute (NaCl) to moles. To do this, divide the mass of the solute (48g) by its molar mass. The molar mass of NaCl is 58.44 g/mol.
Moles of NaCl = Mass of NaCl / Molar Mass of NaCl
= 48g / 58.44 g/mol
2. Convert the volume of the solution to liters. In this case, the volume is given as 250ml, so divide it by 1000 to get the volume in liters.
Volume of solution = 250ml / 1000
= 0.25L
3. Finally, calculate the molarity (M) by dividing the moles of NaCl by the volume of the solution in liters.
Molarity of solution = Moles of NaCl / Volume of solution
= (48g / 58.44 g/mol) / 0.25L
Now, plug the values into the equation to calculate the molarity of the solution containing 48g of NaCl in 250ml of solution.
mols NaCl = grams/molar mass
Then M NaCl = mols NaCl/L NaCl.