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A 750.0 mL solution contains 5.00 g of NaOH. If the molar mass of NaOH is 39.9969 g/mol, what is the molarity of the solution? (3 points)
1.25 M NaOH
0.167 M NaOH
5,98 M NaOH
0.0891 M NaOH
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Respuesta :

0.167 is the molarity of the solution. Hence, option B is correct.

What are moles?

A mole is defined as 6.02214076 × [tex]10^{23}[/tex]of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Molar mass of NaOH = 40

40 g of NaOH = 1 mole

5 g of NaOH = 0.125 moles

1000 ml = 1 L

750 ml = 0.75 L

Molarity = 0.125 ÷ 0.75 = 0.1666

Approximately = 0.167

Hence, option B is correct.

Learn more about moles here:

https://brainly.com/question/8455949

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shristiparmar1221

If the molar mass of NaOH is 39.9969 g/mol, the molarity of a 750.0 mL solution containing 5.00 g of NaOH solution is 0.167. Hence Option (B) is correct

What is Molarity ?

Molarity is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.

In chemistry, the most commonly used unit for molarity is the number of moles per liter, having the unit symbol mol/L or mol/dm³ in SI unit.

Given ;

  • Molar mass of NaOH = 40

       If, 40 g of NaOH = 1 mole

 Then, 5 g of NaOH = 0.125 moles

       If, 1000 ml = 1 L

  Then, 750 ml = 0.75 L

Molarity = 0.125 / 0.75

               = 0.1666

               = 0.167 Approximately

Therefore, If the molar mass of NaOH is 39.9969 g/mol, the molarity of the a 750.0 mL solution containing 5.00 g of NaOH solution is 0.167. Hence Option (B) is correct

Learn more about Molarity here ;

https://brainly.com/question/2817451

#SPJ2

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