Sunday, October 11, 2009

OCTOBER 8, 2009 [JOANNE]

Today, Mr Doktor showed the class how to use a bunsun burner. He went over some basic safety rules and told us to always inspect the hose before using it and to never leave the gas on.
When he turned off the classroom lights, the bunsun burner emited a blue flame.

Mr. Doktor also did an experiment in class where he mixed sulfuric acid with sugar.

Classmates were complaining about the concentrated smell of burning sugar!

ACIDS
-Solid, liquid, or gas at SATP (standard ambient temp & pressure)
-form conducting aqueous solutions
-dissolve in water to produce H+
-taste sour
BASES
-turn red litmus blue
-slippery
-nonconductive
-dissolve in water to produce OH-
NAMING ACIDS
~acids are aqueous (dissolved in water)
~hydrogen compounds are acids
-HCI(aq)-->Hydrochloric acid
-H(2)SO(4)(aq)-->sulfuric acid
~Hydrogen appears first in the formula unless it is part of a polyatomic group
~CH(3)COOH(aq)-->acetic acid

HI(aq)--> Hydro Iodic Acid
-classical rules use the suffix IC and/or the prefix HYDRO-

sulfuric acid
hydrochloric acid
~IUPAC system uses the aqueous hydrogen compound

HCI(aq)Aqueous hydrogen chloride

NAMING BASES
~for now, all bases will be aqueous solutions of ionic hydroxides
-NaOH
-Ba(OH)2
~use the cation name followed by hydroxide
-sodium hydroxide
-barium hydroxide

these are some examples we went over in class
-H(3)PO(4)(aq) Phosphoric acid
-HNO(3)(aq) Nitric acid
-HNO(aq) Nitrous acid
-Mg(aq) Magnesium hydroxide
-HBr(aq) Hydrobromic acid
-HOOCCOOH(aq) Oxalic acid

HOMEWORK:
Read over lab

1 comment:

  1. Good summary so far. However I notice that you haven't done the most recent stuff yet. Make sure you guys stay current with your blog entries. The quality is great though and I don't want you to fall too far behind.

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