Indicate how the concentration of each species in the chemical equation will change to reestablish equilibrium after reactant or product is added. an up arrow indicates an increase in concentration, a down arrow indicates a decrease in concentration, and leaving it blank means there is no change in the concentration. 2co(g) + o2(g) ↽â’â’⇀ 2co2(g) increasing the concentration of co increasing the concentration of co2

Based on Le Chatelier's principle, if the equilibrium of a given system is disturbed by inducing a change in the temperature, pressure or concentration, then the equilibrium will shift in a direction to undo the effect of the change induced.

The given equilibrium is:

2CO(g) + O2(g) ↔ 2CO2(g)

a) If the concentration of CO (reactant) is increased, then the equilibrium will shift to a direction which would lower the concentration of CO i.e. in the forward direction. Therefore,

[CO2] will increase

[CO] and [O2] will decrease

b) If the concentration of CO2 (product) is increased, then the equilibrium will shift to a direction which would lower the concentration of CO2 i.e. in the reverse direction. Therefore,

[CO2] will decrease

[CO] and [O2] will increase.

"the periodic table is arranged in order of atomic number."

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error