Carbon dioxide and water react to form bicarbonate ion and hydronium ion. hyperventilation (rapid breathing) causes more carbon dioxide to be exhaled than normal. how will hyperventilation affect the ph of blood?
this is about a unit on shifting equilibrium and the common-ion effect so try to connect the explanation to those ideas !

The chemical composition of soil varies with depth. an article in communications in soil science and plant analysis describes chemical analyses of soil taken from a farm in western australia. fifty specimens were each taken at depths 50 and 250 cm. at a depth of 50 cm, the average no3 concentration (in mg/l) was 88.5 with a standard deviation of 49.4. at a depth of 250 cm, the average concentration was 110.6 with a standard deviation of 51.5. find a 95% confidence interval for the difference in no3 concentrations at the two depths.