How many grams of #NaCl# in 50 mL of 0.75 M #NaCl# solution?

1 Answer
BRIAN M.
Mar 10, 2016

#2.19 grams NaCl#

Explanation:

The MOLARITY of a solution is determined by the ratio of moles of solute, (the material being dissolved), compared to the liters of solution. the equation is #M = (mol)/L#

For this #NaCl# solution we have a Molarity of 0.75 in 50 mL of solution.

Therefore

M = 0.75 M
V = 50 mL or 0.050 L
moles = #x#

#0.75M = (x mol)/(0.050 L)#

#0.050 L (0.75 M) = x mol#

#0.0375 mol = x#

Use the molar mass of #NaCl# to convert the moles to grams.

#0.0375 cancel(mol NaCl) x (58.44 g NaCl)/(1 cancel(mol NaCl)) = 2.19 grams NaCl#

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