Wednesday, April 6, 2011

Wednsday 4/6- Mackenzie- Acid Base Lab

The first thing we did when we walked into class this morning was pick up the Unit 11 Objectives worksheet.
The worksheet says:
Unit 11 Objectives-
11.1- Be able to describe the general properties of acids and bases.
11.2- Be able to explain and draw the difference between strong and weak acids as well as strong and weak bases.
11.3- Be able to calculate [H+], [OH-], pH, and pOH.
11.4- Predict the products of a neutralization reaction.
11.5- Be able to recreate the titration calculations from the lab.

All of these skills will be necessary in order to do well on the exam.

Next we proceeded to begin the ACID/BASE LAB.
Mr. Tucker gave us 1M NaOH, 1M HCl, and 1M HC2H3O2. (The 1M being the concentration).
NaOH is a strong base, HCl is a strong acid, and HC2H3O2 is a weak acid.
He then gave us litmus paper, Plt paper, Fe, Zn, Cu, Mg, and Pht.
***BE CAREFUL WHEN USING THE Fe, IT COULD CAUSE CUTS TOO FINGERS***
We then tested the NaOH, HCl, and HC2H3O2 with each material.
In order to organize the information we put our data into a data table.
The reactions were as follows:
LITMUS PAPER:
NaOH- turned blue
HCl- No RX
HC2H3O2- No RX
PLT PAPER:
NaOH- turned blue
HCl- turned red
HC2H3O2- No RX
Fe:
NaOH- No RX
HCl- No RX
HC2H3O2- No RX
Zn:
NaOH- No RX
HCl- No RX
HC2H3O2- No RX
Cu:
NaOH- No RX
HCl- No RX
HC2H3O2- No RX
Mg:
NaOH- No RX
HCl- Bubbling and smoking
HC2H3O2- Bubbling straight off of the Mg
Pht:
NaOH- turned blood red/ purple ish
HCl- turned white
HC2H3O2- No RX

Our homework for tonight is to do a venn diagram explaining the similarities and differences that you noticed between Acids and Bases during the lab today. Also, write one sentence that sums up what you found out from the lab today, what did you learn?

No comments:

Post a Comment