how to make 750ml of 1.5 m solution of naoh
1. First you start sentences with a capital letter.
2. You end sentences with a period.
3. You learn to write formulas correctly; naoh and NaOH are not the same.
4. With that said, remember the definition.
molality = # moles/kg solvent.
Did you intend to write 1.5 m with 750 mL or you want the final volume to be 750 mL. I will assume you want to make 1.5 m solution of NaOH using 750 mL solvent. That's much easier to do. Also, I will assume the solvent is water.
Since m = #moles/kg solvent, then
1.5 m * 0.750 kg solvent = 1.125 moles.
1.125 moles x (1 mol NaOH/40 g NaOH) = 45.0 g NaOH. Then you add 0.75 kg water, dissolve, and mix thoroughly.
To make a 750ml solution of 1.5M NaOH, you will need to follow these steps:
Step 1: Calculate the amount of solid NaOH needed.
To determine the amount of NaOH needed, use the formula:
moles = molarity × volume (in liters)
In this case, you want a final volume of 0.75 liters (750ml) and a molarity of 1.5M. Rearranging the formula, we get:
moles = 1.5M × 0.75L = 1.125 moles
Step 2: Convert moles to grams.
The molar mass of NaOH is approximately 40.0 g/mol. Multiply the molar mass by the moles calculated in the previous step to get the amount of solid NaOH needed:
grams = moles × molar mass
grams = 1.125 moles × 40.0 g/mol = 45.0 grams
So, to make a 750ml solution of 1.5M NaOH, you will need approximately 45 grams of NaOH. Dissolve this amount of NaOH in distilled water, and then add water to bring the total volume up to 750ml. Be sure to handle NaOH with caution as it is a caustic substance and can cause harm if not handled properly.
To make a 750ml solution of NaOH with a concentration of 1.5M, you will need to follow these steps:
1. Determine the amount of NaOH (in moles) needed to achieve a 1.5M concentration. The equation for molarity (M) is Molarity (M) = moles of solute / volume of solution (in liters).
Rearrange the equation to solve for moles of solute:
Moles of solute = Molarity (M) × volume of solution (in liters)
Since you want to make a 750ml (0.75L) solution with a concentration of 1.5M, the moles of NaOH can be calculated as:
Moles of NaOH = 1.5M × 0.75L
2. Determine the molar mass of NaOH. The molar mass of Na is approximately 22.99 g/mol, and the molar mass of O is approximately 16.00 g/mol, the molar mass of H is approximately 1.01 g/mol.
Therefore, the molar mass of NaOH is:
Molar mass of NaOH = (22.99 g/mol of Na) + (16.00 g/mol of O) + (1.01 g/mol of H)
3. Calculate the grams of NaOH needed using the moles of NaOH calculated in step 1 and the molar mass of NaOH calculated in step 2:
Grams of NaOH = Moles of NaOH × Molar mass of NaOH
Plug in the values to calculate the grams of NaOH needed.
4. Prepare the solution by adding the calculated grams of NaOH to a container.
You may need to dissolve the NaOH in a smaller volume of water first, and then dilute it to 750ml with additional water. Be cautious when handling NaOH as it is caustic and can cause burns. Use protective equipment, such as gloves and goggles, and dissolve it in a well-ventilated area.
Remember to always add the solid (NaOH) to the liquid (water) and not the other way around, as adding water to a solid can create a violent reaction. Also, be sure to stir the solution until the solid is completely dissolved.
Following these steps will help you prepare a 750ml solution of NaOH with a concentration of 1.5M.