Two students performed a titration to determine the concentration of a solution of acetic acid (HC2H3O2).
They used a known solution of 0.100M potassium hydroxide (KOH) as the standard solution.

1. Write a balanced formula equation for this acid-base reaction.

2. Consider the strengths of the acid and base used in the titration. Would you expect the results of the
reaction to be neutral, slightly acidic, or slightly basic? Explain.

3. Phenolphthalein was chosen as an indicator for the reaction. Why was phenolphthalein a good
choice?

4. How could using a piece of plain, white paper under the flask as the students did the titration help
them determine the end point?

How can you use chemical equations to predict the products of the reaction you can carry out?

Match the name of the following compound:   mgso4  · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback