Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

how can we distinguish between propane and propyne using chemical tests?/
Asked by ruchira121996 | 26 Mar, 2013, 07:22: PM
answered-by-expert Expert Answer
Propene is an alkene, whereas propane is an alkane. Thus, propene is an unsaturated molecule, having a carbon-carbon double bond. If you add bromine water, an aqueous solution of bromine, to the test tubes, you can tell which is propene, the alkene. The bromine reacts with and saturates the double bonds in alkenes, and so decolourises. The bromine does not decolourise when added to an alkane as it does not react. So, in conclusion: 
  • Add bromine water (brown) to the test tubes
  • If the bromine water stays brown, the test tube contains propane
  • If the bromine water goes colourless, the test tube contained propene.
Answered by | 27 Mar, 2013, 06:49: AM
CBSE 11-science - Chemistry
Asked by kirithshiv | 24 Feb, 2024, 12:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by shivanij4734 | 16 Dec, 2023, 08:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by maibamjohnny89 | 15 Jan, 2022, 09:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by archu312004 | 07 Feb, 2021, 10:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by dubeyanubhav65 | 18 Jan, 2021, 09:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by ghastipratiksha | 11 Jul, 2020, 08:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by guptaserendri | 01 Jul, 2020, 03:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by Manpreetsingh669933 | 13 Apr, 2020, 01:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by bittutiwary1234 | 23 Feb, 2020, 12:15: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×