F334 chemistry b salters june 13 2017

For why is the concentration 0.05 for nh4cl

I said because both the reactant have equal volume and equal conc so conc is reduced in proportion so 0.1/2= 0.05

For the one about what does this suggest about the forward reaction, I said it was exothermic because iodine vapour was produced or something... like wtf...

For the one about why he cooled , i said forward reaction is endothermic so to shift eq to the left and i also said because hydrogen is flammable...

Too cool the reaction I wrote about it being a gas and evaporating otherwise he wouldn't be able to determine the concentration of iodine in equilibrium
For the hot bulb being added to solution caused the reaction to
Produce more purple gas which was iodine
This means forward reaction was endothermic and as more energy was taken in more iodine gas was formed to produce purple vapour

What did you get for the volume question I got 115 cm3

I think i forgot to convert it to cm3 because i remember something like 0.115

How did you find the paper? did you get -775 for the hydration