It can be as it can donate a lone pair but it can also be polarised when approaching Alkene double bond(high negative density because 4 e-) and a species with a + or partially +ve region is a electrophile
It can be as it can donate a lone pair but it can also be polarised when approaching Alkene double bond(high negative density because 4 e-) and a species with a + or partially +ve region is a electrophile
My mistake the hydrogen is already partially polarised(no need for polarisation) due to difference in electronegativity. It's still attracted to double bond hence water is a electrophile Posted from TSR Mobile
If you review the mechanism for reaction with water you will see the first step is reaction of the double bond with an H on the water. By virtue of electronegativity difference between O and H, the H is delta positive. The mechanism is described as electrophilic addition.
For anyone that did the chemistry unit 1 Edexcel test last friday, can someone please tell me if, for the question where we had to identify the errors on the drawing of the mechanism, we were supposed to JUST identify the errors or identify the errors AND state how they would be corrected? The question was 3 marks but I'm doing this unit 2 paper from last year with a similar question also worth 3 marks but we have to say how to correct it as well for this one so I'm kinda worried :/
hey, im doing OCR AS Chemistry A, and i was wondering if anyone could help me out im struggling to understand catalytic converters i was away for the lesson and the sheets the teacher gave me dont really make any sense, thank you, kirsten
hey, im doing OCR AS Chemistry A, and i was wondering if anyone could help me out im struggling to understand catalytic converters i was away for the lesson and the sheets the teacher gave me dont really make any sense, thank you, kirsten
There's not much to know here. Look at textbook p.231 and specification p. 36. What do you not understand in particular?
There's not much to know here. Look at textbook p.231 and specification p. 36. What do you not understand in particular?
theres a question in the textbook on p.231 "How are harmful Nox and CO formed in a car engine?" i feel like i know the basics of the information but im a bit 'iffy' on how to go about answering it
theres a question in the textbook on p.231 "How are harmful Nox and CO formed in a car engine?" i feel like i know the basics of the information but im a bit 'iffy' on how to go about answering it
Try to answer it then check how you did vs. the p. 255 answer
theres a question in the textbook on p.231 "How are harmful Nox and CO formed in a car engine?" i feel like i know the basics of the information but im a bit 'iffy' on how to go about answering it
Isn't it with the heterogeneous catalyst - adsorption, chemical reaction (bonds broken), desorption?
This is the mark scheme for 3)b), can someone explain why Concentrated H2SO4 is wrong? AQA AS
Concentrated H2SO4 reacts to produce HCl etc which can't be used to distinguish BaCl2 and MgCl2. You'd use H2SO4 conc to distinguish between the anion in two halides
Concentrated H2SO4 reacts to produce HCl etc which can't be used to distinguish BaCl2 and MgCl2. You'd use H2SO4 conc to distinguish between the anion in two halides
Could someone please explain how to work out enthaply combustion and formation & alsowhat are the main equations and info I need to know for green chemistry Thanks a lot x