Describe how you would make a 100mls of a 6M solution of sodium hydroxide, NaOH?
6M means 6 moles in one liter of solution
100ml is a tenth of a liter , so you use 6/10 of a mole of NaOH
measure .6 moles of NaOH ... molar mass * .6
use a graduated container
... add about 60 or 70 ml of water
... add NaOH and dissolve completely
... add water to the 100 ml graduation
Would you then take (0.6 mol NaOH / 1) (39.997g NaOH / 1 mol NaOH) =23.998g NaOH...so then you dissolve 23.998g NaOH in 100mls of water to make a 6M solution?
NO, The definition is mols/L of solution and that's isn't the same as 100 mL water. You put the 24 g NaOH in a 100 mL volumetric flask, add some water, dissolve all of the NaOH, then add water to the mark on the flask. That way you have 100 mL of SOLUTION. Adding 24 g NaOH to 100 mL water makes MORE THAN 100 mL OF SOLUTION and that solution will not be 6 M.
To make a 100ml solution of 6M sodium hydroxide (NaOH), you will need to follow these steps:
Step 1: Calculate the amount of sodium hydroxide required
To determine the amount of sodium hydroxide needed, you need to use the formula:
Amount (in moles) = Concentration (in M) × Volume (in liters)
Since the volume is given in milliliters (ml), you need to convert it to liters by dividing by 1000:
Volume (in liters) = 100ml / 1000 = 0.1L
Now you can calculate the amount of sodium hydroxide needed:
Amount (in moles) = 6M × 0.1L = 0.6 moles
Step 2: Convert moles to grams
To convert moles to grams, you need to know the molar mass of sodium hydroxide, NaOH. The molar mass can be calculated by adding up the atomic masses of sodium (Na), oxygen (O), and hydrogen (H) from the periodic table:
Na: 22.99 g/mol
O: 16.00 g/mol
H: 1.01 g/mol
Molar mass of NaOH = (22.99 g/mol) + (16.00 g/mol) + (1.01 g/mol) = 40.00 g/mol
Now you can calculate the mass of sodium hydroxide needed:
Mass (in grams) = Amount (in moles) × Molar mass (in g/mol) = 0.6 moles × 40.00 g/mol = 24.00 grams
Step 3: Dissolve sodium hydroxide in the solvent
To make the 6M sodium hydroxide solution, you need to dissolve the calculated mass of sodium hydroxide (24.00 grams) in enough water to make a total volume of 100ml. Gradually add the sodium hydroxide to the water while stirring until it is completely dissolved.
It is important to note that sodium hydroxide is a strong base and can be dangerous. When handling hazardous chemicals, always follow proper safety precautions, such as wearing gloves and eye protection, working in a well-ventilated area, and being cautious of the heat generated during the dissolution process.