4&6!

Question 3 - Molar Concentration A chemist prepared a 0.150molL1 solution of morphine (a naturally occurring base that can be used to control pain) and measured the pH to be 10.50. Calculate the morphine solution's [H3O],[OH]and pOH. Express your answers with 2 significant figures 2 decimals for pOH ). Question 4 - Acid and Base Mixture pH Beaker A contains 32.8mL of 2.25molL1 hydrobromic acid ( HBr ) and Beaker B contains 28.6mL of 2.75molL1 sodium hydroxide (NaOH). When the contents are mixed, what is the pH of the resulting solution? Assume the volumes are additive. Express your answer to 2 decimal places. Question 5 - Percent Dissociation Calculate the percent dissociation of a 2.5102molL1 solution of ethylamine if the pH is 11.50. Question 6 - Titrations At the equivalence point of a titration, 27.45mL of 0.2500molL1 lithium hydroxide solution have been added to 20.00mL of hydroiodic acid solution with an unknown concentration. What is the concentration of hydroiodic acid? Express your answer to 4 significant figures