does anyone ideas of potential six marks ?
is there always one six mark in chem' additional btw ??
Not much tbh, just know how to work them out
1 mole of a substance is the relative formula mass of the substance in grams
can you please give me some c2 questions
Can someone write out for me the method for insoluble salts?
How is relative atomic mass linked to isotopes?
I do not get the Haber process at all, someone explain please?
Also, for C2, I dont get the electrolysis of brine!!
Haber process- making ammonia from nitrogen (air) and hydrogen (natural gas)
The forwards direction is exoteric so in order to increase the yield, we need to decrease the temperature and increase the pressure( pressure leans towards the direction of the equation with less moles)
However we use a temperature of 450 as a compromise. This is because if it was too low, the particles would not have enough kinetic energy so there would be a decrease in the frequency of collision and the success of said collisions.
Using a high pressure is dangerous as it may explode and is expensive so we use a pressure of 200 atmospheres
An iron catalyst is used to lower the activation energy
Think theres a good chance of nanoparticles to come up- carbon nanotubes used for tennis rackets and so on
Can someone please explain titration calculations & calorimetry?
Omg I'm so glad I'm not the only one, I'm predicted A* but C2 mock I got a B, I know the content but the style of questions throw me D: good luck