Concentration of Moles and Volume

• What does the equation link in chemistry regarding an aqueous substance?

  The number of moles to its concentration and volume
• How is concentration expressed in this context?

  Moles per decimeter cubed
• What does the forward slash in concentration notation signify?

  It means per
• In what units do we measure volume in this context?

  Decimeters cubed
• How can the formula for moles, concentration, and volume be represented?

  As \( n = c \times v \)
• If you have 800 centimeters cubed of sodium hydroxide at a concentration of 0.2 moles per decimeter cubed, how many moles do you have?

  0.16 moles
• How do you convert 800 centimeters cubed to decimeters cubed?

  By dividing by 1000 to get 0.8 decimeters cubed
• What is the concentration of hydrochloric acid if 1.5 decimeters cubed contains 0.6 moles?

  0.4 moles per decimeter cubed
• What is the first step in solving for an unknown concentration or volume in a chemical reaction?

  To write out what is known from the question
• How do you convert volumes from centimeters cubed to decimeters cubed?

  By dividing by 1000
• What is the molar ratio of potassium hydroxide to sulfuric acid in the given reaction?

  2 to 1
• How many moles of sulfuric acid react with 0.015 moles of potassium hydroxide based on the molar ratio?

  0.0075 moles
• How do you calculate the concentration of sulfuric acid using the number of moles and volume?

  By dividing moles by volume
• What is the concentration of sulfuric acid if there are 0.0075 moles in 0.025 decimeters cubed?

  0.3 moles per decimeter cubed
• What are the steps to find an unknown concentration or volume in a chemical reaction?

  1. Write out known values.
  2. Convert volumes to decimeters cubed.
  3. Calculate moles of known substance.
  4. Use molar ratio to find moles of unknown substance.
  5. Calculate concentration of unknown substance.