1a2bcio8 Posted June 10, 2008 Report Share Posted June 10, 2008 Hello, I'm in a bit of a spot regarding an assignment and test that I will be handing in and taking this Friday. Basically due to illness I mised the last few lessons of Chemistry and consequently I don't have the info with which to understand the questions I've been set. Specifically these are: 6. Write equations for the reactions between:- a. methane and chlorine b. ethane c. propene monomers d. ethanol and ethanoic acid e. 1-propyl ethanoate and sodium hydroxide In each case, specify the reaction conditions needed and name the TYPE of reaction occurring. 7. For each of the following pairs of compounds, give a chemical test by which they may be distinguished. In each case, state the reagent you would use and what you would observe with each compound. Write equations where reactions occur. i. propane and propene ii. propan-1-ol and 2-methylpropan-2-ol iii. butanone and butanol I really need to know how to figure out these questions as variations of them will most likely be in my exam. It would be massively appreciated if I could get some help with this because I may need to pass this chem module to pass my course and goto uni! Additionally, is this equation that I've done correct for the incomplete combustion of pentane - C₅H₁₂ + 5½O₂ = 5CO + 6H₂O or I guess more accurately 2C₅H₁₂ + 11O₂ = 10CO + 12H₂O Thanks in advance, Ben Quote Link to comment Share on other sites More sharing options...
Simpson Posted June 10, 2008 Report Share Posted June 10, 2008 6. Write equations for the reactions between:- a. methane and chlorine CH4 + Cl2 -> CH3Cl + HCl 7i. propane and propene - Bromine water, alkene decolorises it cos' it breaks the double bond Others are hard to do unless done by hand. Quote Link to comment Share on other sites More sharing options...
Bionic Balls Posted June 10, 2008 Report Share Posted June 10, 2008 can help you with those next time you ride... Write equations for the reactions between:- a. methane and chlorine - chloromethane (depending on how much Cl/how long you react, more H groups will be replaced- chloromethane then dichloromethane etc..). This is substitution or chlorination.. b. ethane- reacting with what? itself? c. propene monomers- polypropene (polymerisation) d. ethanol and ethanoic acid- alcohol + acid makes aldehyde (or ketone depending on where the CO group is). Can't remember how to name these though! will end with -al though...(EG: ethanal) e. 1-propyl ethanoate and sodium hydroxide- ethanol + propane (hydrolysis of an ester) you can probably look up conditions on google pretty easily...or an a-level revision guide... 7. For each of the following pairs of compounds, give a chemical test by which they may be distinguished. In each case, state the reagent you would use and what you would observe with each compound. Write equations where reactions occur. i. propane and propene- alkenes turn bromine water colourless, alkanes do f**k all. ii. propan-1-ol and 2-methylpropan-2-ol- zinc chloride in HCl. Tertiary goes cloudy, primary does nowt. iii. butanone and butanol- all i remember is that ketones smell nice. equation is fine- people usually prefer whole numbers... 2C₅H₁₂ + 11O₂ = 10CO + 12H₂O riding riding riding? Quote Link to comment Share on other sites More sharing options...
joe b Posted June 12, 2008 Report Share Posted June 12, 2008 Hello, I'm in a bit of a spot regarding an assignment and test that I will be handing in and taking this Friday. Basically due to illness I mised the last few lessons of Chemistry and consequently I don't have the info with which to understand the questions I've been set. Specifically these are: 6. Write equations for the reactions between:- a. methane and chlorine b. ethane c. propene monomers d. ethanol and ethanoic acid e. 1-propyl ethanoate and sodium hydroxide In each case, specify the reaction conditions needed and name the TYPE of reaction occurring. 7. For each of the following pairs of compounds, give a chemical test by which they may be distinguished. In each case, state the reagent you would use and what you would observe with each compound. Write equations where reactions occur. i. propane and propene ii. propan-1-ol and 2-methylpropan-2-ol iii. butanone and butanol I really need to know how to figure out these questions as variations of them will most likely be in my exam. It would be massively appreciated if I could get some help with this because I may need to pass this chem module to pass my course and goto uni! Additionally, is this equation that I've done correct for the incomplete combustion of pentane - C₅H₁₂ + 5½O₂ = 5CO + 6H₂O or I guess more accurately 2C₅H₁₂ + 11O₂ = 10CO + 12H₂O Thanks in advance, Ben Ben, i can send you pictures of my chemistry books regarding these questions if you're still sturggling. let me know, dude . Cheers, Joe. Quote Link to comment Share on other sites More sharing options...
1a2bcio8 Posted June 12, 2008 Author Report Share Posted June 12, 2008 Ben, i can send you pictures of my chemistry books regarding these questions if you're still sturggling. let me know, dude . Cheers, Joe. I'm alright now actually. Thanks to all of you that helped/responded. Really appreciated. Quote Link to comment Share on other sites More sharing options...
Diz Posted June 18, 2008 Report Share Posted June 18, 2008 You gotta love the organised cheating of the TF members Quote Link to comment Share on other sites More sharing options...
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