If keq = 4 x 10^-7, which of the following is true?
a) products are favored
b) reactants are favored
c) there are no reactants remaining
d) reactants and products are present in equal amounts
2. what does a chemical reaction rate measure?
a) the amount of reactant used
b) energy change per unit of time
c) change in amount of reactant per unit of time
d) the amount of time needed for the reaction to come to completion
3. in an equilibrium reaction that makes more moles of gas than it consumes, what is the effect of increasing the pressure?
a) the reaction makes more reactants
b) the reaction makes more products
c) the reaction is unchanged
d) the answer cannot be determined
4. what is the effect of adding ore water to the following equlibrium reaction? co2 + h20 < --> h2co3
a) more h2co3 is produced
b) there is no effect
c) the equilibrium is pushed in the direction of the reactants
d) co2 concentration increases
5. which of the following explains the increase in reaction rate from a catalyst?
a) more collisions between particles, so more successful collisions
b) catalysts do not increase the reaction rate
c) same number of collisions, but more are successful
d) fewer collisions but more successful
6. which of the changes listed below would shift the following reaction to the right? 4hci(g) + 02(g) < --> 2cl2(g) + 2h20(g)
a) increase of pressure
b) addition of cl2
c) decrease of pressure
d) removal of 02