Objective 4:
1. The common ion found in all acids is H+.
2. When acids and bases dissolve in water, acids form hydrogen ions (hydrogens that have lost their electron), and bases form hydroxide ions.
3. The ions that the acid NHO3 will form after being dissolved in water are H + NO3.
4. A substance's pH tells you the amount of H+ ions there are in it. If the pH is higher lower that 7, it is an acid, and if it is higher, it is a base.
5. When the pH is low, the concentration of hydrogen is higher.... so the pH of 3 would have more hydrogen ions. Basically, when the pH is lower than 7, there are more hydrogen ions that hydroxide ions (because anything with a pH lower than 7 is an acid, and when acids dissolve in water, they form hydrogen ions... so there are more.) Similarly, when the pH is higher than 7, there are more hydroxide ions than hydrogen ions for the same reasons.
Cites:
http://wiki.answers.com/Q/What_ion_is_present_in_all_acidic_solutions
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
Your #5 is stellar. Nice work putting that together even though we haven't covered it in class yet. Thanks for the complete citations as well.
ReplyDeleteLooks great... thanks, Zelle!