Strong acid A is titrated against strong base B. The concentration of A and B are determined by standardization of strong base B using potassium acid phthalate (KHP). Which of the following is always true? A. Number of millimoles of B = number of millimoles of KHP B. Number of milliequivalents of B = number of milliequivalents of KHP C. Number of millimoles of A = number of millimoles of KHP D. Number of milliequivalents of A = number of milliequivalents of KHP Which of the following requirements is needed for a titration to be successful? A. Reactants must react in a 1:1 ratio. B. Reactant or product must be colored. C. The titrant must be made from a primary standard. D. The equilibrium constant for the reaction must be large. During the titration of a diluted vinegar sample with a sodium hydroxide solution, the titre of sodium hydroxide used was less than expected. Which of the following could account for the lower than expected titre ? A. The sodium hydroxide solution had been allowed to stand exposed to the air for a long time prior to the titration. B. The pipette used to deliver the vinegar solution was rinsed with water prior to use. C. The volumetric flask used to prepare the diluted vinegar solution was rinsed with water prior to use. D. The burette used to deliver the sodium hydroxide solution was rinsed with water prior to use. The cell Zn/Zn2+(1M)//Cu2+(1M)/Cu has a potential of 1.10V. This means that A. The zinc electrode is positive with respect to the Cu electrode. B. The spontaneous cell reaction is Zn + Cu2 + Zn2+ + Cu C. At equilibrium E = 0 D. At equilibrium, E = E