Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password

Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Chem unit 1 pastpap2

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
This question is about hexane, C6H14, and hex-1-ene, C6H12. What test would you use to distinguish between hexane and hex-1-ene Give the results of the test for each substance,   show
🗑
show Test : add (acidified) potassium manganate((VII)(solution)ALLOW potassium permanganate Result: no change with hexane/stays purple And goes colourless / brown with hex-1-ene (1) OR  
🗑
show Test : add alkaline potassium manganate((VII))(solution)(1) ALLOW potassium permanganate Result: no change with hexane/stays purple and goes green with hex-1-ene (1)  
🗑
show C=C restricts rotation/ C=C prevents twisting /C=C can’t rotate/ lack of free rotation round C=C (so the groups can’t change position relative to the bond)  
🗑
show Hex–2-ene has different groups on the C at each  
🗑
The value for the enthalpy change of combustion in this experiment is different from the value given in data books. Suggest TWO reasons for this difference   show
🗑
A student suggested that the results would be more accurate if a thermometer which read to 0.1°C was used. Explain why this would not improve the accuracy of the result. A calculation is not required.   show
🗑
C6H12(l) + H2(g) → C6H14(l) (i) What catalyst is used in this reaction?   show
🗑
Explain why the values(standard enthalpy change) are so similar   show
🗑
Chloroethae, C2H5Cl, can be made from either ethane or ethene.(i) What reagent and condition would be used to make chloroethane from ethane   show
🗑
State the type of reaction and mechanism by which this reaction occurs   show
🗑
show Hydrogen chloride / HCl  
🗑
Which of making chloroethane has electrophilic addition a higher atom economy   show
🗑
From ethene   show
🗑
show yield high as no di-, tri- etc substituted products form /only one product / no by-products OR no side reactions occur OR no C4 compounds can form.  
🗑
show Energy for man materials/lifetime of product/how often need replaced /metal rusts/plastic more easily punctured etc • ease of recycling/steel an excellent recyclable material/consequences of disposal/is it biodegradable? from a non-renewable resource?  
🗑
show C2H5 and the molecular formula C4H10.  
🗑
Avogadro constant 6.0 × 1023 mol–1. Therefore the number of atoms in 1 mol of carbon dioxide is   show
🗑
show / by 4 +412kjmol-1  
🗑
show C2H6 + Cl2 --> C2H5Cl + HCl.  
🗑
The role of the UV radiation in the reaction is to   show
🗑


   

Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
 
To hide a column, click on the column name.
 
To hide the entire table, click on the "Hide All" button.
 
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
 
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.

 
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how
Created by: ufuoma
Popular Chemistry sets