Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

During the course of the day, the pH of the water in a pool begins to rise. What does that mean about the concentration of hydroxide ions in the water? Explain. What might you do if you wanted to lower the pH back to its original value? Explain.

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

Explain what theoretically should be produced at the anode during the electrolysis of aqueous sodium chloride and why. In the lab, a student observes chlorine gas being produced at the anode. Give a probable explanation for this observation. In this example (the electrolysis of aqueous sodium chloride with chlorine gas produced), what solution would be produced after the electrolysis is complete? Explain.

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

A titration was completed of an unknown concentration of HCl with a known molarity of NaOH.  The buret that was to be filled with the NaOH solution was wet with water from a previous washing. How might this affect the molarity of the HCl that is calculated at the end? Explain why.

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

What is the difference between a catalyst and an intermediate? What do they have in common?

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

True or False and EXPLAIN your choice: When two chemical equations are added to give a net equation, the equilibrium constant for the net equation is the product of the equilibrium constants of the summed equations.

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

If a solution has a molarity of 3M, does that mean that the molality is also 3m? Explain why or why not.

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

A + B –> C

If the overall reaction order of the above reaction is zero, explain what that means. In addition, explain what might happen to the rate if you doubled the intial concentration of A and say why.

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

A student is assigned to make a 450mL of a 1.5M solution of copper (II) nitrate from solid copper (II) nitrate and water. Explain in detail how it should be done, including specific numbers/amounts and lab equipment used.

All PBCQs for this weekend are canceled. Have a great long weekend!

Remember: You may use any resources at your disposal except for other people. You only need to write 3-4 sentences. Be concise AND include all relevant information to fully answer the question. There may be more than one reasonable answer. Be sure to publish your answer under your element name.

Would it take longer to cook pasta (by boiling) on a mountain or at sea level? Explain thoroughly utilizing all relevant chemistry concepts.