allisonmarieross317
Answered

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HELP PLEASE :( ||What is the concentration of KCl if 10 g are dissolved in enough water to make 12 L?

Sagot :

drpelezo

Answer:

see explanation

Explanation:

By definition solution concentration = amount of solute/amount of solution

solution = solute + solvent

There are several ways to express concentration of solute in solution; grams/Liter, moles/Liter, pounds/gallon, grams/milliliter, etc. I'm guessing your problem is asking for either g/L or moles/L where moles/L is called a Molar Concentration.

Given 10 grams solute & 12 Liters of solution, concentration = 10g/12Liters = 0.83g/L.

If Molar concentration is needed, convert the solute mass into moles (divide by formula wt.) then apply to Molar Conc. = moles solute/Liters of solution.

Molar concentration => [KCl] = (10g/74g·mol⁻¹)/(12L) = 0.011Molar or. 0.011M.

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