Synthesis A2 Flashcards
Test for C=C bond
bromine water
positive result for bromine water
yellow/orange to colourless
negative result for bromine water
stays yellow/orange
test for primary and secondary alcohols
acidified potassium dichromate
positive result for potassium dichromate
orange to green
negative result for potassium dichromate
stays orange
what conditions are for an acidified potassium dichromate test
aqueous sulphuric acid + K2Cr3O7 + heat
what does a tollen’s reagent test for
aldehydes
positive result for tollen’s reagent
silver mirror
negative test for a tollen’s reagent
no change
conditions for a tollen’s reagent
NH3, NaOH, AgNO3, [Ag(NH3)2] and warm
what does a Fehling’s solution test for
aldehyde
positive test for a Fehling’s solution
blue solution to red/orange solid
negative test for a Fehling’s solution
stays blue
conditions for a Fehling’s solution
Cu2+ and warm
what does sodium hydrogen carbonate test for
carboxylic acid
positive test for a carboxylic acid
bubbles of gas/fizzing
negative test for a carboxylic acid
no reaction
molecular formula of sodium hydrogen carbonate
NaHCO3
test for a haloalkene
hydrolysis followed by acidified AgNO3
conditions for test for haloalkane
warm with NaOH and add AgNO3
positive results for test for chloroalkane
white solid
positive results for test for bromoalkane
cream solid
positive result for test for iodoalkane
yellow solid
negative result for test for haloalkane
no reaction
test for acyl chloride
hydrolysis
conditions for test for acyl chloride
add H2O
positive result for test for acyl chloride
white fumes
negative results for test for acyl chloride
no reaction
