What is the concentration of the hydroxide ion (OH-) given that the concentration of the hydronium ion (H3O+) is 1.5 x 10-5 M? A) 6.7 x 10-10 M B) 1.5 x 109 M C) 1.0 x 10-14 M D) 1.0 x 10-19 M E) none of the above

Define equilibrium.A) no reactants reactB) no products are formedC) the rate of the forward reaction is faster than the rate of the reverse reactionD) the rate of the reverse reaction is faster than the rate of the forward reactionE) the rate of the forward reaction equals the rate of the reverse reaction

A 0.10 M solution of an electrolyte has a pH of 4.5. The electrolyte is:A) a strong acid.B) a strong base.C) a weak acid.D) a weak base.E) none of the above

Which of the following statements are TRUE of buffer solutions?     1. A buffer solution can be made by mixing equal concentrations of         C2H3O2 and NaC2H3O2     2. A buffer solution can be made by mixing equal concentrations of          HCl and NaCl     3. A buffer solution resists changes in pH when small quantities of acid          or base are added.A) 1 and 2 onlyB) 2 and 3 onlyC) 1 and 3 onlyD) All of 1, 2, and 3E) None of 1, 2, and 3

In Lhasa, Tibet, the elevation is 12,000 feet. The altimeter reading in an airplane is 19.50 in Hg. This pressure is equal to ________ mm Hg. (1 in. = 2.54 cm)A) 9.58B) 495C) 0.651D) 1.61E) 23.7

 A molecule can exhibit hydrogen bonding attractive force if it contains hydrogen covalently bonded to A)  fluorine, oxygen, or nitrogen.B)  chlorine, fluorine, or iodine.C)  sulfur, oxygen, or fluorine.D)  oxygen or nitrogen.E)  nitrogen, fluorine, oxygen, or nitrogen.

To make a 0.800 M solution, one could take 0.800 moles of solute and add A) 2.00 L of solvent.B) 2.00 kg of solvent.C) enough solvent to make 1.00 L of solution.D) enough solvent to make 1.00 kg of solution.

Give the temperature and pressure at STP.A) 0°C and 760 mm HgB) 100K and 760 torrC) 25°C and 30.00 in HgD) 273 K and 1 torr HgE) 0°C and 1 mm Hg

 While traveling, an airplane passenger placed a bag of potato chips in his checked luggage. When he opened the luggage, the bag had exploded and potato chips were everywhere in his luggage. Which gas law is this an example of?A) Avogadro’s LawB) Ideal Gas LawC) Charles’s LawD) Boyle’s LawE) Dalton’s Law

How many milliliters of a 0.266 M LiNO3 solution are required to make 150.0 mL of 0.075 M LiNO3 solution via dilution?A) 53.2 mLB) 42.3 mLC) 18.8 mLD) 23.6 mLE) 35.1 mL