calculate the mass of sodium hydroxide needed to prepare 500 mL of a 0.10 M solution.
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Caculate the mass of sodium clorite needed to prepare 200g of 25%solution
To calculate the mass of sodium hydroxide needed to prepare a 0.10 M solution, we'll use the formula:
Mass = Molarity x Volume x Molar Mass
Step 1: Determine the molar mass of sodium hydroxide (NaOH).
Sodium (Na) has a molar mass of 22.99 g/mol, Oxygen (O) has a molar mass of 16.00 g/mol, and Hydrogen (H) has a molar mass of 1.01 g/mol.
So, the molar mass of NaOH = (22.99 g/mol) + (16.00 g/mol) + (1.01 g/mol) = 39.99 g/mol.
Step 2: Calculate the mass of sodium hydroxide.
Mass = 0.10 M x 0.500 L x 39.99 g/mol
Here, we have the molarity (0.10 M), the volume (0.500 L), and the molar mass (39.99 g/mol).
Mass = 1.9995 g
Therefore, the mass of sodium hydroxide needed to prepare a 500 mL of a 0.10 M solution is approximately 2.00 g.