Al2Se3 (s) + H2O (sub>(l) ==> Al(OH)3 (s) + H2Se(g)
You can see that this reaction produces hydrogen selenide gas. But it will be wet because of the water. I can't draw diagrams on the computer so you will need to research your text and notes to see how to set up the apparatus. Please note that you must use a drying agent to remove the water from the gas AND the drying agent must not absorb the hydrogen selenide gas.
On another matter, the other question to which you refer probably are the Uuh, element #116, fluoride. Here is a web site that shows the periodic table in all its glory. Look for element #116. It will have chemical properties similar to others in that group. S, for example, forms SF6
I didn't get all of the equation correct. The water should be
H2O(l).
And the periodic table site is
http://www.webelements.com/
I have a selection of equipment:
additional funnel, wash bottle, funnel, porcelain boat, side arm connector, bent glass tube, gas jar, U-tube, straight glass tube and polythene connectors(unlimited)
Which of them should i use and how to connect them to make an apparatus to prepare a gas jar of dry hydrogen selenide.
Hydrogen selenide can be prepared by reacting aluminium selenide with water, the other product being solid aluminium hydroxide.
Please help.
Im looking for the answer for this one 2! just cant believe how many people are on here doing S103!
Good luck!!
And good luck to you.
Can you help with Question 3 c
(highest fluoride and highest hydride) ?
afraid not!! soz!
only on q 1 still!!
Do u kno Q1 F ii?
This defo aint my subject!!
and I thot the last TMA was hard
0 answers