# Chemistry

posted by .

How many grams of sodium sulphate (mol. wt. 142) are required to make 1.2 liters of 0.5N solution

• Chemistry -

Technically one can't calculate this without knowing the reaction involved; however, is most problems of this type the usual is to use total + and - charge.
Therefore, equivalent weight Na2SO4 = molar mass/+ charge = 142/2 = 81.
How many equivalents do you need? That's
N x L = 0.5N x 1.2L = ?
Then ?equivalent x equivalent weight = grams Na2SO4.

• physical pharmacy -

48.6

## Similar Questions

1. ### Chemistry 1

Sodium carbonate reacts with a solution of HCl solution with the evolution of gas (CO2) to yield a solution that is neutral. If 0.265 grams of sodium carbonate are required to neutralize 1.00 mL of HCl solution, what mass (in grams) …
2. ### chemistry

solution contains 5 grams of of a mixture of sodium hydroxide and sodium sulphate dissolved per 500 ml
3. ### chemistry

I need a formula for: 0.5 grams of sodium chloride is dissolved to make 0.05 liters of solution. next 0.5 grams of sodium chloride is dissolved to make 0.05 ml of solution. next 670 grams of Pb (C2H3O2)4 are dissolved to make 3.5 ml …
4. ### AP Chemistry

Calculate the volume of a 36% solution of hydrochloric acid (density = 1.50g/mL, molar mass = 36 g/mol) required to prepare 9 liters of a 5 molar solution. A. 1 liter B. 2 liters C. 3 liters D. 4 liters E. 5 liters
5. ### chemistry

ihave two solutions. in the first solution , 1.0 moles of sodium chloride is disslved to make 1.0 liters of solution . in the second one, 1.0 moles of sodium chlorine is added to 1.0 liters of water.is the molarity of each solution …
6. ### chem

A solution is prepared by dissolving 25 grams of sodium sulfate in enough water to give a total volume of 500. mL. The molar mass of sodium sulfate is 142 grams per mole. What is the molarity of the solution?
7. ### chemistry

a chemist has a supply of cuso4 solution that contains 230 gram per litre of water. she wishes to make a copper sulphate solution that has a solution of 200.0 grams per litre gow ,uch of her copper sulphate solution should she use …
8. ### Chemistry

What does 0.053 M NaCl mean? How many grams of sodium chloride are needed to make 5.0 liters of this solution?
9. ### Chemistry - Answer Check

Find the molarity given 1.5 Liters of solution containing 62.5 g MgO. - 1.03 M Mgo There are 0.32 Liters of a 2.5 M HF solution. How many moles and grams of hydrofluoric acid are there?
10. ### Chemistry

(1)Make 500 ML of 4N H3PO4. How many grams will be needed?

More Similar Questions

Post a New Question