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3 years ago

Provide a set of step by step instructions to make 750 mL of 1.5 M calcium chloride solution.

Chemistry

1 answer:

DiKsa [7]3 years ago

3 0

Answer: PLease see answer in explanation column

Explanation:

FIRST STEP

We find the grams ( mass ) of solute required to prepare the solution by using the formula

grams ( mass ) of solute, g(CaCl2)= Molar mass x Molarity of the solution x Volume of the solution

Therefore Preparing 750 mL of 1.5 M calcium chloride solution, we have that Molar mass of Calcium chloride =110.98 g/mol

g(CaCl2) =110.98 g/mol X 1.5mol/L X 0.75L

g(CaCl2) =124.8525g CaCl2

SECOND STEP

Now Dissolve 124.8525g CaCl2 in about 350ml of distilled water then add more water until the final volume be comes 750ml

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Answer:

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Explanation:

We have the masses of two reactants, so this is a limiting reactant problem.

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$\text{Moles reacted} = \text{0.057 81 mol O}_{2} \times \dfrac{\text{4 mol NH}_{3}}{\text{5 mol O}_{2}} = \text{0.046 25 mol NH}_{3}$

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