learning check

© 2013 Pearson Education, Inc. Chapter 8, Section 5 1

Learning Check

What is the molarity (M) of a solution prepared by diluting 10.0 mL of 2.7 M NaOH to 60.0 mL?


Solution


Step 1 Prepare a table of the concentrations and volumes of the solutions.

Analyze the Problem.



Step 2 Rearrange the dilution expression to solve for the unknown quantity.

Step 3 Substitute the known quantities into the dilution expression and calculate.

Solution


Guide to Calculations Involving Solutions in Chemical Reactions


Learning Check

How many liters of 3.00 M HCl are needed to completelyreact with 4.85 g of CaCO3?


Solution


Step 1 State the given and needed quantities.

Analyze the Problem.


Solution


Step 2 Write a plan to calculate the needed quantity or concentration.

mass molar moles mole–mole moles molarity litersof CaCO3 mass of CaCO3 factor of HCl HCl of HCl


Solution


Step 3 Write equalities and conversion factors including mole–mole and concentration.


Solution




Solution


Step 4 Set up the problem to calculate the needed quantity or concentration.


Learning Check

If 22 mL of 0.10 M MgCl2 is needed to completely react 15 mL of AgNO3 solution, what is the molarity of AgNO3?


Solution

If 22 mL of 0.10 M MgCl2 is needed to completely react15 mL of AgNO3 solution, what is the molarity of AgNO3?

Step 1 State the given and needed quantities. Analyze the Problem.


Solution


Step 2 Write a plan to calculate the needed quantity or concentration.

volume molarity moles mole–mole moles of MgCl2 MgCl2 of MgCl2 factor of AgNO3


Solution




Solution


Step 4 Set up the problem to calculate the needed quantity or concentration.

learning check

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