What is the concentration of NA + in parts per million by mass in 0.00152M Na2SO4
To find the concentration of Na+ in parts per million by mass, we need to first calculate the molar mass of Na+.
The molar mass of Na+ is 22.99 g/mol.
Next, we need to find the mass of Na+ in 1 liter of 0.00152M Na2SO4 solution.
There are 2 Na+ ions per 1 Na2SO4 molecule, so the molarity of Na+ ions is 2 x 0.00152M = 0.00304M.
The mass of Na+ ions in 1 liter of solution is:
0.00304 mol/L x 22.99 g/mol = 0.069856 g/L
To convert this to parts per million (ppm), we need to multiply by 1,000.
0.069856 g/L x 1,000 = 69.856 ppm
Therefore, the concentration of Na+ in parts per million by mass in 0.00152M Na2SO4 is 69.856 ppm.
To find the concentration of Na⁺ in parts per million by mass in 0.00152 M Na₂SO₄, follow these steps:
Step 1: Determine the molar mass of Na₂SO₄.
The molar mass of sodium sulfate (Na₂SO₄) can be calculated by adding up the atomic masses of each element:
Na₂ = (2 x atomic mass of Na)
S = atomic mass of S
O₄ = (4 x atomic mass of O)
Using the periodic table, the atomic mass of sodium (Na) is approximately 22.99 g/mol, sulfur (S) is approximately 32.07 g/mol, and oxygen (O) is approximately 16.00 g/mol.
Molar mass of Na₂SO₄ = (2 x 22.99) + 32.07 + (4 x 16.00)
Step 2: Calculate the mass of Na₂SO₄ in 0.00152 M solution.
The concentration of Na₂SO₄ is given as 0.00152 M, which means there are 0.00152 moles of Na₂SO₄ in every 1 liter of solution.
To calculate the mass of Na₂SO₄ in the solution, multiply the molar mass of Na₂SO₄ by the number of moles:
Mass of Na₂SO₄ = (0.00152 moles/L) x Molar mass of Na₂SO₄
Step 3: Calculate the mass of Na⁺ in the solution.
Since Na₂SO₄ dissociates into two Na⁺ ions, the number of moles of Na⁺ is twice the number of moles of Na₂SO₄.
Moles of Na⁺ = 2 x (0.00152 moles/L)
To calculate the mass of Na⁺, multiply the moles of Na⁺ by the molar mass of Na:
Mass of Na⁺ = Moles of Na⁺ x Molar mass of Na
Step 4: Convert the mass of Na⁺ to parts per million by mass.
Parts per million by mass (ppm) is a way to express concentrations on a small scale. It represents the mass of the solute (in this case, Na⁺) divided by the mass of the solution, multiplied by 10⁶.
Concentration of Na⁺ (ppm) = (Mass of Na⁺ / Mass of Na₂SO₄) x 10⁶
Now you can substitute the values into the formula and calculate the concentration of Na⁺ in ppm.