A student makes a standard solution of potassium hydroxide by adding 14.555g to 500.0mL of water. Answer the following questions, being sure to include units and remember sig figs. Show work. a. What is the concentration of this standard solution? b. If the student pours out a 15.6mL sample of this solution, how many moles of sodium hydroxide does the student have in the sample? c. What possible issues many results from air bubbles in the burette for this experiment? Be specific about how this may affect the final calculated concentration of acid (Will it be lower or higher than actual? Why?)
A student makes a standard solution of potassium hydroxide by adding 14.555g to 500.0mL of water. Answer the following questions, being sure to include units and remember sig figs. Show work. a. What is the concentration of this standard solution? b. If the student pours out a 15.6mL sample of this solution, how many moles of sodium hydroxide does the student have in the sample? c. What possible issues many results from air bubbles in the burette for this experiment? Be specific about how this may affect the final calculated concentration of acid (Will it be lower or higher than actual? Why?)
Chapter5: Chemical Reactions
Section: Chapter Questions
Problem 5.93E
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2. A student makes a standard solution of potassium hydroxide by adding 14.555g to 500.0mL of water. Answer the following questions, being sure to include units and remember sig figs. Show work.
a. What is the concentration of this standard solution?
b. If the student pours out a 15.6mL sample of this solution, how many moles of sodium hydroxide does the student have in the sample?
c. What possible issues many results from air bubbles in the burette for this experiment? Be specific about how this may affect the final calculated concentration of acid (Will it be lower or higher than actual? Why?)
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