Question

5 points
12. How many liters of a 4.2 Molar solution of NaCl are needed to make
352 grams of AICI3? *
O A. 0.186 liters
B. 1.86 liters
C. 18.6 liters
D. 352 liters

Answer 1

Moles of AlCl_3

$\\ \tt\hookrightarrow \dfrac{352}{133}=2.64mol$

Now

• Molarity=Moles of solute/Volume of solution in L

$\\ \tt\hookrightarrow 4.2=\dfrac{2.64}{V}$

$\\ \tt\hookrightarrow V=0.62L$