Is BF3 - Trigonal planar as it has 3 electrons in it's outer shell and each flourine bring one. Which makes the angle 120 degrees.
I said that BF4- would be tetrahedral. The boron has gained an electron so now it has got 4 electrons around it's outer shell with the addition of four more from the flourine. No lone pairs so 109.5 degrees.
Not too sure on b. Like normally the answer to these questions are dative covalent bond. Which means I have misunderstood something about the ion.
Hi has anyone done the ocr chemistry A quantitative on enthalpy it my only and last chance to get a decent grade, so if i could get some hints and tips that would be very much nice of anyone
Hi has anyone done the ocr chemistry A quantitative on enthalpy it my only and last chance to get a decent grade, so if i could get some hints and tips that would be very much nice of anyone
Are you sure it's quantitative? I've done the evaluative on enthalpy.
Anyone done JANUARY 2010 f322 ocr? Question 6g..... How can you tell using the mass spectrum whether the alcohol is propan-1-ol or propan-2-ol? surely they wouldn't show up as any different because a CH3+ fragment ion can form for both of them? Please helppppppp
Anyone done JANUARY 2010 f322 ocr? Question 6g..... How can you tell using the mass spectrum whether the alcohol is propan-1-ol or propan-2-ol? surely they wouldn't show up as any different because a CH3+ fragment ion can form for both of them? Please helppppppp
Propan-1-ol is a primary alcohol, whereas Propan-2-ol is a secondary alcohol. By identifying the organic product F produced via the oxidation of substance E using the infrared spectroscopy given to you, you can determine what type of alcohol E is, and so choose between the two.
This is because primary alcohols produce a different organic compound to secondary alcohols when oxidised in the presence of acified potassium dichromate. Primary alcohols produce aldehydes and then carboxylic acids, but secondary alcohols produce ketones.
Propan-1-ol is a primary alcohol, whereas Propan-2-ol is a secondary alcohol. By identifying the organic product F produced via the oxidation of substance E using the infrared spectroscopy given to you, you can determine what type of alcohol E is, and so choose between the two.
This is because primary alcohols produce a different organic compound to secondary alcohols when oxidised in the presence of acified potassium dichromate. Primary alcohols produce aldehydes and then carboxylic acids, but secondary alcohols produce ketones.
Thank you so much! Is that the only way you could distinguish between them? there's no way you would know without the infrared spectrum shown?
It it would be really nice if you told me how to figure it out.
I was first checking if it was right.
I don't really have a method; just look at the parts of the product and try to have options for the reactants. The phosphate part of it comes from the phosphoric acid. Then you Calcium, so the most obvious bases with calcium are calcium oxide and calcium hydroxide