1280 grams
A 0.205 M solution will have 0.205 moles per liter. 250 milliliters is 1/4 of a liter, so in that sample, there will be 0.05125 moles. NaOH has a molar mass of 39.9971 grams per mole, so 2.05 grams added to 250 mL of water will make the desired solution.
Molar mass of NaOH = ~40 g/mole. Depending on what volume of 0.2 N NaOH you want, the amount will vary. Assuming you want to make 1 liter, then 0.2 mole/L x 40 g/mole = 8 grams.So, weigh out 8 grams NaOH and dissolve in enough water to make a final volume of 1000 ml. For 100 mls of 0.2 N NaOH, weigh 0.8 grams and dissolve in enough water to make a final volume of 100 ml.
X/200 * 100 = 2.5 x= 5g
a solution of 0.1M NaOH has been prepared.How would you make 1L of the same solution
Dissolve 40 grams of solid NaOH into enough water that it dissolves completely. Transfer this to a volumetric flask. Then add water until the volume of the solution is 1 liter. Care is needed as heat is generated which affects the volume. It is best to make up with water to about 2 cm short of the mark, allow to cool and then add the balance of the water.
Two parts.Molarity = moles of solute/Liters of solution ( 100 mL = 0.1 Liters )0.5000 M NaOH = X moles/0.1 L= 0.05 moles NaOH--------------------------------now,0.05 moles NaOH (39.998 grams/1 mole NaOH)= 1.99 grams NaOH required====================( could call it 2.00 grams )
20 grams of NaOH in 1000 ml water(1M)
A 0.205 M solution will have 0.205 moles per liter. 250 milliliters is 1/4 of a liter, so in that sample, there will be 0.05125 moles. NaOH has a molar mass of 39.9971 grams per mole, so 2.05 grams added to 250 mL of water will make the desired solution.
add 10 grams of NaoH into 1000 ml water, it will give you NaoH of 0.25N. As for making 1N solution you need to disolve 40 grams of NaoH into 1 litre water.
Molar mass of NaOH = ~40 g/mole. Depending on what volume of 0.2 N NaOH you want, the amount will vary. Assuming you want to make 1 liter, then 0.2 mole/L x 40 g/mole = 8 grams.So, weigh out 8 grams NaOH and dissolve in enough water to make a final volume of 1000 ml. For 100 mls of 0.2 N NaOH, weigh 0.8 grams and dissolve in enough water to make a final volume of 100 ml.
Molarity = moles of solute/Liters of solution ( 918 ml = 0.918 liters )rearranged algebraically,moles of solute = Liters of solution * Molaritymoles of NaOH = (0.918 l)(0.4922 M)= 0.45184 moles NaOH=======================so,0.45184 moles NaOH (39.998 grams/1 mole NaOH)= 18.1 grams sodium hydroxide needed============================
X/200 * 100 = 2.5 x= 5g
I think you are misreading I for 1. it is one molar concentration of NaOH, or sodium Hydroxide. To make mix 40 grams with enough water to make a liter.
a solution of 0.1M NaOH has been prepared.How would you make 1L of the same solution
Take 2.409 ml of 3.05M NaOH mix c a balance of H2O to form 50ml of mixture
Dissolve 40 grams of solid NaOH into enough water that it dissolves completely. Transfer this to a volumetric flask. Then add water until the volume of the solution is 1 liter. Care is needed as heat is generated which affects the volume. It is best to make up with water to about 2 cm short of the mark, allow to cool and then add the balance of the water.
Make sure that the equation is balanced. NaOH + HNO3 > > NaNO3 + H2O ( all one to one ) 15.0 grams NaOH (1mol NaOH=39.998g) (1mol HNO3/1mol NaOH) = 0.375 moles of HNO3 Molarity = mols solute/volume solution 2.00M HNO3 = 0.375 mols/X volume = 0.188 Liters or, 188 milliliters.