Organic analysis (alkenes,alcohols...TESTS)

• reactions of ALKENES- alkene decolourise Br2 (aq)

  A) unsaturation

  B) eelctrophillic

  C) tetrachloromethane

  D) C-C double bond

  E) colourless

  F) orange

  G) 2 layers because hydrocarbon is less dence than water

  
• REACTIONS OF ALKENES

  A) Potassium manganate

  B) diol

  C) oxidation

  D) oxidised

  E) room temp.

  F) purple

  G) brown

  H) acidified

  I) pale pink/colourless

  J) alkene

  
• OXIDATION OF ALCOHOL: 1' easily oxidised to aldehydes and then to caboxylic acid. 2' easily oxidised to ketones. 3' not oxidised under normal conditions.

  A) reduced

  B) oxidised

  C) orange

  D) potassium dichromate

  E) resist

  F) orange

  
• CHLORINATION OF ALCOHOLS (HALOGENOALKANES): Add solid phosphorous pentachloride to a dry alcohol at room temperature. CH3CH2OH + PCl5 → CH3CH2Cl + POCl3 + HCl(g)

  A) PCL5

  B) steamy fumes

  C) conc. ammonia

  D) WHITE SMOKE OF AMMONIUM

  E) pH

  F) NEUTRAL

  
• Reactions of aldehydes and ketones using oxidising agents

  A) green

  B) orange

  C) fehling's

  D) blue

  E) red

  F) stays blue

  G) reduced

  H) oxidised

  I) blue to red

  
• HALOGENOALKANES a) with water containing silver nitrate R –X (aq) + H2O(l) → R –OH(aq) + H+ (aq) + X– (aq) b) with aqueous alkali (OH- IONS)

  A) Ag+ forms a ppt with OH-

  B) HNO3

  C) silver nitrate