Chemistry
Question-Alkenes react with hydrogen gas in the presence of a nickel catalyst. 0.2 mol of an alkene reacted completely with 19.2 dm3 of hydrogen gas at room temperature and pressure. How many carbon carbon double bonds are there in a molecule of this alkene? [The molar volume of a gas is 24.0 dm3 mol–1 at room temperature and pressure]. How do I solve this???
Find the number of moles of hydrogen gas.
1 mole of double bonds will require 1 mole of hydrogen gas.
So the ratio of the number of moles of the alkene to the number of moles of hydrogen gas gives you the answer.
1 mole of double bonds will require 1 mole of hydrogen gas.
So the ratio of the number of moles of the alkene to the number of moles of hydrogen gas gives you the answer.
Original post by BobbJo
Find the number of moles of hydrogen gas.
1 mole of double bonds will require 1 mole of hydrogen gas.
So the ratio of the number of moles of the alkene to the number of moles of hydrogen gas gives you the answer.
1 mole of double bonds will require 1 mole of hydrogen gas.
So the ratio of the number of moles of the alkene to the number of moles of hydrogen gas gives you the answer.
Why is the ratio of double bonds to hydrogen 1:1 ???
Original post by Vidya Das
Why is the ratio of double bonds to hydrogen 1:1 ???
You need one H2 molecule to saturate one C=C.
Try it with ethene, propadiene, buta-1,2,3-triene. You'll realise that the above holds true
Quick Reply
Related discussions
- TSR Study Together - STEM vs Humanities!
- Universities for medicinal chemistry
- Chemistry at Uni?
- Can I do engineering without chemistry in a levels
- I enjoy chem practicals more than bio practicals. Is a chem degree right for me?
- Chemistry degrees
- Is Chemistry better at A-level than at GCSE?
- A Level subjects for Biological Sciences: advice thread
- Required practicals chemistry A level
- taking a levels I don't like?
- Is there anyway to do extra chemistry outside of school?
- Maths or Chemistry Degree?
- Biomedical Sciences vs Chemistry at Oxford
- What is actually studied in a chemistry degree?
- Crisis of Subjects - I don't know what to study at uni
- Biochemistry undergraduate course
- A-level chemistry revision, taking notes and exam practise help and paper 3
- chemistry at uni?
- Biochemistry at University
- Chemical engineering or chemistry degree
Latest
Trending
Last reply 1 week ago
Im confused about this chemistry question, why does it form these productsTrending
Last reply 1 week ago
Im confused about this chemistry question, why does it form these products
