1.) Use the equation of sodium chloride dissolving in water to complete the activity.
NaCl(s) ⇄ Na+(aq) + Cl–(aq)
A student is testing two clear liquids. One liquid is water that has been modified to have a basic pH. The other liquid is a sports drink that contains added electrolytes, including Na+(aq). How can the student use the equilibrium reaction of sodium chloride to determine which liquid is which? In three to five sentences, explain your answer. Review the information in Lesson 6. Use the information to answer the question.
2.) Chromate ions react according to the following equation, where the left side of the reaction is yellow and the right side is orange.
CrO42– + 2H+ ⇄ Cr2O72– + H2O
A student adds sodium hydroxide (NaOH) to the solution at equilibrium. In one to two sentences, describe and explain any changes to the solution that the student will observe. Lesson 3 Pages 2-4
3.) In one to two sentences, explain why metal is often used for making wire and the properties that make metal useful. Lesson 7 Page 2