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6. What would be the concentration of a solution formed when 1.00 g of NaCl are dissolved in water to make100 mL of solution?

Sagot :

To find the concentration we can do it in terms of molarity. Molarity is a way of expressing the concentration of a solute in a solution, it is expressed with the term M and can be described by the following equation:

[tex]Molarity=\frac{MolesSolute}{Lsolution}[/tex]

So first we must find the moles of NaCl present in 1.00 grams, the moles of NaCl will be:

[tex]\begin{gathered} molNaCl=givengNaCl\times\frac{1molNaCl}{MolarMass,gNaCl} \\ molNaCl=1.00gNaCl\times\frac{1molNaCl}{58.44gNaCl}=0.017molNaCl \end{gathered}[/tex]

So, the molarity of the solution will be:

[tex]Molarity=\frac{0.017molNaCl}{0.100Lsolution}=0.17M[/tex]

Answer: The concentration of the solution in molarity will be 0.17M