Redox titration

The 22nd we did an experiment was the a redox titration.
These were the materials:

Materials

Potassium Permanganate

Hydrogen Oxide

Erlenmeyer flask, little cup and pipette

Burette

We first had to put the potassium permanganate into the burette. Then, we had to calculate the amount of potassium permanganate we could dissolve in hydrogen oxide. A redox reaction will take place.  

Lab Session 22/01/13: Redox Reactions

The materials needed for the experiment

Burrette in place

Pouring KMnO4 in the burrette

Pouring KMnO4 in the burrette

Measuring how many mL it needs to be (50ml)

Hydrogen peroxide with 4ml of Sulfuric acid

Getting ready for titration

Final result color

28ml of KMnO4 left in burrette

KCl by Alexander Rodríguez Mackay

Alexander Rodríguez


Element/Compound : potassium chloride             Solute organic solvent : no

Chemical representation : KCl                            Reactivity versus water : very solouble

Smell (strong/mild) : no smell                              Reactivity versus nitric acid : Turns yellow

Color : white                                                      Ph : 7 (neutral)

Shine: Yes                                                         Aggregation state : Solid

Melting point : 773ºC                                         Boiling point : 1420ºC                                   

Magnetism : No                                                 Combustibility : No                      

Solubility in water : yes

Potassium chloride (KCl)

Vincent & Carlos' Experiment Data

	Element/compound	Chem. repr.	smell (y/n - strong/light)	colour	shine	aggr. state
Phenol	Compound	C6H5OH	Yes - Strong	Pink/Transparent	Yes	Solid
Magnesium	Element	Mg	No	Gray/Silver	Yes	Solid
Calcium hydroxide	Compund	Ca(OH)2	No	White	No	Solid
m.p.	b.p.	magnetism	combustib.	sol. w.	sol. org.	r. vs. water
-	-	No	-	No	No	No
-	-	No	-	No	No	No
-		No	-	No	No	No
r. vs. OH-	r. vs. H+	pH acq. sol.	Student 1	Student 2
		Acidic	Vincent	Carlos J.
		Alkaline	Vincent	Carlos J.
		Alkaline	Vincent	Carlos J.

Vincent & Carlos' Experiment

Equipment that we used

Crystalized Phenol compound

Pure Calcium hydroxide compound

Magnesium metal element

Shows that Ca(OH)2 is does NOT have magnetism

Close up of magnetivity of Ca(OH)2

Ca(OH)2 in reaction with water

The three different substances we tested (Phenol, Ca(OH)2 and Mg)

Test tubes showing the reactivity of all substances with water and cyclohexane

Guillermo Rodríguez-Tabernero Vidal:


Element/Compound :  Iodine                               Solute organic solvent : it dissolves

Chemical representation : I2                                Reactivity versus water : slightly dissolve- no reactivity

Smell (strong/mild) : Mild                                    Reactivity versus OH : None. doesn't even dissolve

Color : Grey                                                         Ph : Is a solid and Ph is for aqueous solutions

Shine: Yes                                                          Aggregation state : Solid

Melting point : 113,5ºC                                      Boiling point : 184ºC                                     

Magnetism : No                                                  Combustibility : No- sublimates (Watch video)                          

Solubility in water : No

Iodine (solid)

Iodine (solid)