claim: Other A$AP Mob members have had their music videos directed by ASAP Rocky.
evidence: A Bjerrum plot is a graph of the concentrations of the different species of a polyprotic acid in a solution , as functions of the solution 's pH , when the solution is at equilibrium .. graph. chart. polyprotic acid. Acid#Polyprotic acids. solution. solution. equilibrium. Chemical equilibrium. Due to the many orders of magnitude spanned by the concentrations , they are commonly plotted on a logarithmic scale .. orders of magnitude. orders of magnitude. logarithmic scale. logarithmic scale. Sometimes the ratios of the concentrations are plotted rather than the actual concentrations .. Occasionally H + and OH − are also plotted .. Most often , the carbonate system is plotted , where the polyprotic acid is carbonic acid -LRB- a diprotic acid -RRB- , and the different species are carbonic acid , carbon dioxide , bicarbonate , and carbonate .. polyprotic acid. Acid#Polyprotic acids. carbonic acid. carbonic acid. diprotic acid. diprotic acid. carbon dioxide. carbon dioxide. bicarbonate. bicarbonate. carbonate. carbonate. In acidic conditions , the dominant form is ; in basic -LRB- alkalinic -RRB- conditions , the dominant form is CO32 − ; and in between , the dominant form is HCO3 − .. basic. Base ( chemistry ). At every pH , the concentration of carbonic acid is assumed to be negligible compared to the concentration of CO2 , and so is often omitted from Bjerrum plots .. concentration. concentration. carbonic acid. carbonic acid. These plots are typically used in ocean chemistry to track the response of an ocean to changes in both pH and of inputs in carbonate and .. carbonate. carbonate. The Bjerrum plots for other polyprotic acids , including silicic , boric , sulphuric and phosphoric acids , can also be constructed .. silicic. Silicic acid. boric. Boric acid. sulphuric. Sulfuric acid. phosphoric. Phosphoric acid