To Observe Acid- Base Properties of Four Solutions Using Indicators, in Order to Classify the Solution as Acids or Bases
Essay by Teku23 • December 18, 2018 • Lab Report • 454 Words (2 Pages) • 764 Views
Essay Preview: To Observe Acid- Base Properties of Four Solutions Using Indicators, in Order to Classify the Solution as Acids or Bases
5.1 B: Properties of Acids and Bases
Purpose: To observe acid- base properties of four solutions using indicators, in order to classify the solution as acids or bases
Materials: Refer to page 230 in text
Procedure: Refer to page 230 in text
Observations: Data chart
Data table
Original colour | Mg ribbon | Red litmus | Blue litmus | Bromothymol blue | Phenolthalein | Methyl Orange | Acid or base | |
Solution A | Light yellow | Turned white | Stays light red | Turns light red | Turns light yellow | Stays light yellow | Turns dark red | Acid |
Solution B | Clear/ Colourless | Turned Dark black | Turns dark blue | Turns dark blue | Turned dark blue | Turns pink/red | Turns dark yellow | Base |
Solution C | Clear/ colourless | Turned Dark black | Turns dark blue | Turns dark blue | Turned dark blue | Turns pink/red | Turns light yellow | Base |
Solution D | Clear/ colourless | Turned dark black | Turns dark blue | Turns dark blue | Turned dark blue | Turns pink/red | Turns dark yellow | Base |
Discussion
Pg 231 1-4
List the solutions in order from most acidic to least acidic. Solution A, Solution C, Solution B, Solution D
Which solution do you think was neutral? I think that if there was a solution that is neutral it would have to be solution D because one of the litmus red indicators for that solution still had a small amount of red at the tip
I believe solution c is more basic. It is more basic because in the solution methyl orange turned bright yellow, if u look at the acid base indicator chart the yellow colour the brighter the yellow the more basic it is and the darker it is the more acidic it is. Also, when bromothymol blue was added to solution c it stayed blue which means it’s a base.
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