Compilation of Chemistry Formulae (Need Pluvia or Riviet double check) (1 Viewer)

[~shinigami~]

Compilation of Chemistry Formulae (Need Pluvia or Riviet to double check)

Just a minute ago, I decided to recall as many Chemistry formulae I could remember and decided to post it up.

Can everyone check to see if I've made any mistakes or missed any important formulae.

Here's the list:

1. n = m/MM

2. c = n/v

3. c₁v₁ = c₂v₂

4. n = v/MV (For gases)

5. ΔH = -mCΔT [thanks to airie for reminding me about the minus sign]



Where,

n = Number of moles (mol)

m = mass of substance (g)

MM = Molar Mass (g)

c = concentration (mol L^-1)

v = volume (L)

MV = Molar Volume i.e 22.7L @ 0 degrees celcius (STP) & 24L @ 25 degrees celcius (RTP)

ΔH = Change in Enthalpy or Heat energy (J)

C = Specific Heat Capacity of substance e.g. 4.18 for Water

ΔT = Change in Temperature (degrees celcius or Kelvin is indifferentiable, right?)



So everyone, please check if I've made any mistakes and add any formulae that I've missed.

Hope this was helpful.

 

[airie]

Re: Compilation of Chemistry Formulae (Need Pluvia or Riviet to double check)

Oh, so there's no new formulas apart from the ones you already know from the prelim course? Sounds good

EDIT: Btw, it might be that delta(H) = -mc delta(T), if you take delta(H) to be the change in enthalpy [after minus before] and delta(T) change in temperature [after minus before]

 

[~shinigami~]

Re: Compilation of Chemistry Formulae (Need Pluvia or Riviet to double check)

Oh, so there's no new formulas apart from the ones you already know from the prelim course? Sounds good

EDIT: Btw, it might be that delta(H) = -mc delta(T), if you take delta(H) to be the change in enthalpy [after minus before] and delta(T) change in temperature [after minus before]

Thanks airie, I'd edit my post to put a minus infront.

Well we've only just started the HSC course so I haven't come across any new formulae yet. I just decided to remember anything I could cause I have an assessment coming up.

I'll just keep editing and putting new formulae when or if I come across them. Or alternatively, someone who's done the course already could inform us of any new formulae?

 

[airie]

Re: Compilation of Chemistry Formulae (Need Pluvia or Riviet to double check)

lol right...For an instant you actually got me excited there (No more formulas to memorise?!)

 

[~shinigami~]

Sorry bout that, airie.

I'm sure there won't be that many formulae compared to math or something.

Just look at that list, it's from the ENTIRE prelim course.