1. How many mL of a 2.0 M solution of NaOH would bve needed in order to have 0.5
ID: 708424 • Letter: 1
Question
1. How many mL of a 2.0 M solution of NaOH would bve needed in order to have 0.500 mol of NaOH? (Molar mass of NaOH is 40.0 g/mol) 2. How many mL of a 45.0% (m/v) solution of NaCl would you need in order to have 12.0 g of NaCl? (Molar mass of NaCl is 58.54 g/mol) 3. A bottle of wine contains 750.0 mL of wine. If the wine is 12.00%(v/v) alcohol, how many mL of alcohol are in the bottle of wine? 1. How many mL of a 2.0 M solution of NaOH would bve needed in order to have 0.500 mol of NaOH? (Molar mass of NaOH is 40.0 g/mol) 2. How many mL of a 45.0% (m/v) solution of NaCl would you need in order to have 12.0 g of NaCl? (Molar mass of NaCl is 58.54 g/mol) 3. A bottle of wine contains 750.0 mL of wine. If the wine is 12.00%(v/v) alcohol, how many mL of alcohol are in the bottle of wine?Explanation / Answer
1)
A 1 molar solution is a solution in which 1 mole of a compound is dissolved in a total volume of 1 litre.
So, let the volume be v Litres
=> 2 x v = 0.5
=> v = 0.25 litres = 250 mL
2)
Again let the requiredd volume be v Litres.
So, => 0.45 x v x 58.54 = 12
=> v = 0.455 Litres = 455 mL
3)Here, let the volume of alcohol be x.
So, => 12/100 = x / 750
=> x = (12 x 750) / 100 = 90 mL
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