How many grams of sodium hydroxide are present in 750.0 ml of 2.5 m sodium hydroxide solution?

75 g of sodium hydroxide is present in the solution.

Explanation :

Given :

Molarity  of sodium hydroxide solution= 2.5 M

Litres of Solution = 750 mL

Molar mass of NaOH = 40 g/mol

To Find:

Grams of Sodium Hydroxide =?

Solution :

Molarity of the solution is expressed in Litres, So Converting 750.0 mL to Litres we have

750.0mL=0.750 Litres

Grams of Solution ,  moles=

Where  

M = Molarity  

L = litres of solution

mol= moles of solute

Mol = 1.875  

Also the molecular weight of NaOH is  40.00 g/mol

Grams of sodium hydroxide = 1.875 mol * 40.00 g/mol = 75 g

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