Day before Flashcards
Sulfur combusion observation
Blue flame
Define an alloy
A mixture of a metal with one or more other elements
Conditions for cracking
650’ and Aluminium Oxide catalyst
Lithium ion flame test
Red
Sodium ion flame test
Yellow
Potassium ion flame test
Lilac
Calcium ion flame test
Orange-red
Cu 2+ ion flame test
Blue-green
Sodium hydroxide test
Dissolve in water and add NaOH
NaOH test for copper 2+
Blue
NaOH test for Fe 2+
Green
NaOH test for Fe 3+
Brown
Ammonium test
Dissolve in water, add NaOH, gas turn red litmus blue
Conditions for hydration of ethene
300c, 65atm, phosphoric acid
Conditions for fermentation of glucose
yeast, 30c, anaerobic
Colour of ethanol combusting
Non-luminous, blue flame
Microbial oxidation of ethanol equation (and chemical)
Ethanol + 2[O] –> Ethanoic acid + water
Chemical oxidation of ethanol - reactants
Dilute sulfuric acid + Potassium dichromate (VI)
Colour change in chemical oxidation of ethanol
Orange to Green
How to make an ester
Mix CA and A together, add concentrated sulfuric acid, warm, add sdium carbonate
properties and uses of esters
Distinctive, fruity semlls used in food flavourings and perfumes
What does a biopolyester mean
Microbes like bacteria and fungi can use enzymes to break down the polymer into monomers as an energy supply
Define electroysis
The breaking down of a compound using electricity
What is made at cathode
Hydrogen (unless less reactive than it)
