Answer in General Chemistry for Kimberli #156795
1. Based on the nature of the reactants in each of the equations below, which reaction at 25°C will occur at the fastest rate?
(1) C(s) + O2 (g) → CO2 (g)
(2) NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
(3) CH3O H(l) + CH3C OOH(l) → CH3C OOCH3( aq) + H2O (l) (4) CaCO3( s) → CaO(s) + CO2(g)
2. In an experiment involving a reaction, it was found that an increase in temperature increased the rate of the reaction. Explain this result in terms of collision theory.
3. Which event must always occur for a chemical reaction to take place?
(1) formation of a precipitate
(2) formation of a gas
(3) effective collisions between reacting particles
(4) addition of a catalyst to the reaction system
Given the equation for a reaction at equilibrium:
2SO2 (g) + O2 (g) —> 2SO3 (g) + Energy
4. Explain, in terms of collisions between molecules
why increasing the concentration of O2 ( g) produces a decrease i n the concentration of SO2 (g).
2) With an increase in temperature, there is an increase in energy that can be converted into activation energy in a collision, and that will increase the reaction rate. … Increasing the concentration of a reactant increases the frequency of collisions between reactants and will, therefore, increase the reaction rate.
4) An increase in the concentration of a product will lead to a decrease in the amounts of all products and an increase in the amounts of all reactants. In both cases, there will be a net increase in the total amount of the added component, but the increase will be less than the amount added.