Question

How many grams of NaCl (s) are needed to make 2.5 liters of 0.75 M solution of Nacl?

Answer 1

Question #47870, Chemistry, Other

How many grams of NaCl (s) are needed to make 2.5 liters of 0.75 M solution of NaCl?

Answer:

$$C(\mathrm{NaCl}) = 0.75 \, \mathrm{M} = 0.75 \, \mathrm{mol/L}$$ $$M(\mathrm{NaCl}) = 58.4 \, \mathrm{g/mol}$$ $$n(\mathrm{NaCl}) = C \cdot V$$ $$n = m / M$$ $$m / M = C \cdot V$$ $$m = C \cdot V \cdot M$$ $$m(\mathrm{NaCl}) = 0.75 \cdot 58.4 \cdot 2.5 = 109.5 \, (\mathrm{g})$$

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