How do you calculate the weight of a solution?

Once the molecular weight of the solute is known, the weight of chemical to dissolve in a solution for a molar solution less than 1M is calculated by the formula: grams of chemical = (molarity of solution in mole/liter) x (MW of chemical in g/mole) x (ml of solution) ÷ 1000 ml/liter.

What is the mass of NaOH that is required to make 500ml of a 0.5 M aqueous solution?

Since, molarity = number of moles of solute/ volume of solution in lit. Hence, 10g of NaOH should be taken to obtain a 0.5 M solution of volume 500 mL.

How do you make a 5M solution of NaOH?

Dissolve 20.0g of NaOH pellets in 80ml of deionised water in a beaker. 3. When cooled, bring the final volume to 100ml.

How do you find the molar weight of NaOH?

Molecular weight of the NaOH= 23 + 1 + (16) = 40. – Now we must express the molecular weight of the sodium hydroxide in molar mass. – The molar mass of the sodium hydroxide is 40 g/mol.

How do you calculate weight from normality?

Multiply the normality by the mass equivalent and the volume of the solution (in L) to calculate mass (in grams) of the dissolved compound. In this example, the mass of H2SO4 is 2.5 N x 49g/equivalent x 0.24L = 29.4g.

How do you prepare 100 ml of NaOH from NaOH?

1000 ml of 1M NaOH contains= 40 g. 100 ml of 0.5 M NaOH contains =40x 100/1000 x 0.5= 2- grams. So to prepare 100 ml of 0.5M NaOH, dissolve 2- grams of NaOH in a 100 ml standard flask in distilled water.

How much does 20g of NaOH weigh in grams?

One mole of NaOH weighs 23 (Na)+16 (O)+1 (H)=40 g A 0.5 M NaOH is then 20 g NaOH/L. So dissolve 20 g NaOH in 500 ml water let it cool down to room temperature and fill it up to one liter. For accurate results you can use an analytical balance and a volumetric flask.

What is the volume of 16G of NaOH in DM3?

40 x 0.4 g = 16g of sodium hydroxide pellets should be dissolved in water and the total volume of the solution made up to 1 litre (dm3), once the mixture has cooled to room temperature. How many grams are needed to make 10\% of NaOH?

How much NaOH is in a liter of pure water?

One mole of NaOH in one Liter of pure water = 1 N. Since you want 0.5, use 1/2 mole (20.0 grams) of NaOH. If this is for a titration, you will need to standardize it. By the time you make it up, filter it (if required), cool it and then standardize it, you will find that it is cheaper to buy the premade solution from VWR-SP or Fisher or?.