Use the reaction to complete the activity. KOH + HBr → KBr + H2O A student sets up a titration apparatus with 25 mL of potassium hydroxide in the flask. In three to five sentences, explain how the student can use a 0.1 M solution of hydrobromic acid to determine the concentration of potassium hydroxide in the reaction. (4 points) 9th grader vocabulary and use no sources
In the titration setup, the student should add a few drops of an indicator, such as phenolphthalein, to the potassium hydroxide solution in the flask. This indicator will change color when the reaction between KOH and HBr is complete. The student then slowly adds the 0.1 M hydrobromic acid solution to the flask, while constantly swirling the mixture. The hydrobromic acid will react with the potassium hydroxide, forming potassium bromide and water. The endpoint of the titration is reached when the indicator changes color, indicating that all the potassium hydroxide has reacted. By determining the volume of hydrobromic acid solution required to reach the endpoint, the student can calculate the concentration of potassium hydroxide in the original solution.
