Question

1.)What is the molarity of a solution that contains 55.0 grams of Na2SO4 in 250 milliliters of solution? (The mass of one mole of Na2SO4 is 142 grams.)

1.55 M


0.0968 M


10.3 M


0.645 M


2.)Which of the following describes the properties of an acid?


are generally proton donors


produce H+ ions in solution


are electron pair acceptors


may include all of these characteristics


3.)The greater the percent ionization of an acid, the __________.


stronger the acid


weaker the acid


more hydrogen atoms the acid molecule has in its formula


more [OH-] ions are in solution


4.)What do larger values on the pH scale represent?


higher concentration of H3O+ ions


lower concentration of H3O+ ions


lower concentration of OH- ions


more acidic the solution

Answer 1

1)1.549=1.55M

2)may include all of these characteristics

3)stronger the acid

4)lower the concentration of H3O+ ions