Question

What volume in milliters would give 12.0 grams of NaOH from a 2.0 M NaOH solution?

Answer 1

Answer:

V = 150 mL

Explanation:

Hello!

In this case, since the molarity of a solution is computed via:

$M=\frac{n}{V}$

Whereas we are asked to compute the volume:

$V=\frac{n}{M}$

Thus, we first compute the moles in 12.0 g of NaOH as its molar mass is about 40.0 g/mol:

$n=\frac{12.0g}{40.0g/mol}=0.3mol$

Thus, at first instance, the volume liters is:

$V=\frac{0.3mol}{2.0mol/L} \\\\V=0.15L$

Which in milliliters is:

$V=0.15L*\frac{1000mL}{1L}\\\\V=150mL$

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