Objective 4:
1. The common ion in acids is the hydrgogen of H+.
2. An acid forms hydrogen ions in water, and a base forms hydroxide ions in water.
3. The HNO3 breaks up into H+NO3- in a solution. It is an acid. Acids form hydrogen ions in water.
4. It tells you the amount of hydrogen ions. If the pH is lower, then it is an acid. If it is higher than 7, it's a base.
5. When the pH number is lower, the concentration of the hydrogen ions is higher. So, the solution with the pH of 3 has more hydrogen ions.
Citations:
http://wiki.answers.com/Q/What_is_the_common_ion_in_all_acids
http://wiki.answers.com/Q/What_happens_when_acids_and_bases_dissolve_in_water
http://answers.yahoo.com/question/index?qid=20080108190009AA0Uied
http://answers.yahoo.com/question/index?qid=20090102141813AAr1kRp
http://wiki.answers.com/Q/What_solution_has_a_greater_concentration_of_hydrogen_ions_a_solution_with_a_pH_of_3_of_a_pH_of_7_Explain
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