Rose Petal Indicator

Hazards: 

HCl is corrosive and toxic.

Methanol is flammable.

Chemicals and Solutions: 

methanol 100 ml

ammonium hydroxide 1M

HCl conc. in dropper bottle

Materials: 

Mortar and pestle

250 ml beaker

magnetic stirrer

buret stand and buret

rose petals

Procedure: 

Mix methanol and rose petals in the mortar.  Add 2-3 drops HCl, stir, and decant the liquid into a beaker. Place the beaker on the magnetic stirrer and titrate with the ammonium hydroxide.

To schedule a demonstration, please send an email to the demonstration lab.

 

Contact:

Eric Camp

Lecture Demonstration Technician

Bagley Hall 171

(206) 543-1606

ericcamp@uw.edu

 

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