IGCSE CHEMISTRY DOUBTS

[Meticulous]

Because Na is a group one metal. When it ionizes, it loses one outer electron to become stable, thus forming Na⁺ .

In addition, when chlorine gains an electron to become stable, it gains one electron (from Na atom), forming Cl^- .

[username]

because na has valency of +1
so it can only give 1 electron
and cl has valency of -1 so it can only accept an electron
+1+(-1)=0
so...
NaCl
hope u undertand
cheers mate!!!

[Master_Key]

Alright, I've got a Chemistry doubt here:

Explain why the formula for the compound formed when Sodium and Chlorine react is NaCl and not NaCl₂

Note: this is not in the past papers, it's from my chemistry textbook.

Thanks in advance

Na has a valency of +1 and Cl of -1

Na loses 1 atom nd Cl accepts 1.
so it NaCl

Mg loses 2  Cl accepts 1
MgCl2

[Ivo]

Na has a valency of +1 and Cl of -1

Na loses 1 atom nd Cl accepts 1.
so it NaCl

Mg loses 2  Cl accepts 1
MgCl2

LOLS!  I think you mean electron rather than atom! 

[**RoRo**]

Thanks Guys...I understand the concept, but I didn't know how to put it in words, thanks so much

[Master_Key]

LOLS!  I think you mean electron rather than atom! 

yeah i meant electrons of atoms.

[rameeziiii]

could soeone please explain to me the forward and backward reactions and the equilibrium thingy... i dont get them...

[Master_Key]

could soeone please explain to me the forward and backward reactions and the equilibrium thingy... i dont get them...

N2+3H2=2NH3

when the reaction frm lft to ryt is equal i mean that N and H react at the same rate as NH3 decomposes then it is in quilibrium.
no net change.

[J.Darren]

N2+3H2=2NH3

when the reaction frm lft to ryt is equal i mean that N and H react at the same rate as NH3 decomposes then it is in quilibrium.
no net change.

The rate of reaction to be exact. An increase in pressure, decrease in temperature will favour the forward reaction (yield of ammonia) in the haber process.

[Ivo]

could soeone please explain to me the forward and backward reactions and the equilibrium thingy... i dont get them...

Is this what you wanted?  Please see attached.

[Master_Key]

The rate of reaction to be exact. An increase in pressure, decrease in temperature will favour the forward reaction (yield of ammonia) in the haber process.

habers process is done for commercial output of ammonia and there also comes a time for equilibruim in this reaction but the values r to get d highest yield of ammonia possible for commercial output.

[WARRIOR]

question 1

[cooldude]

question 1

its because organic compounds are not soluble in water and are in ethanol, ethanol is an organic solvent

[anonymous7]

Okay, I have a question.

May/June 2004, Paper 3, Question 4, (b)(ii)

Why the difference between the height of the precipitate between Iron (II) and Iron (III) salts?

[jellybeans]

Questions!
i) how do you draw the structure of the polymer formed from but-2-ene?
ii) How do you deduce the formula of the alkene which has a relative molecular mass of 168?
is it something to do with the empirical formula of... idk CnH2n hence 3n = 168 ... blahblah
lol help please! THANKS.