jsmith613
Jan8-12, 09:18 AM
1. The problem statement, all variables and given/known data
say we were hydrating Cobalt chloride crystals
why would
(i) more cobalt chloride
(iii) less water
result in a GREATER temperature change of reaction>
thanks
2. Relevant equations
3. The attempt at a solution
for ii I have used Q = mcΔt and on re-arranging to for Δt Q/mc is GREATER for a smaller mass of water.
for i I am less sure. I thought as follows: heat change is per mole of substance. If we have more moles the heat change will be greater.
I am not so sure on this though - please could someone confirm if I am correct for both i and ii
say we were hydrating Cobalt chloride crystals
why would
(i) more cobalt chloride
(iii) less water
result in a GREATER temperature change of reaction>
thanks
2. Relevant equations
3. The attempt at a solution
for ii I have used Q = mcΔt and on re-arranging to for Δt Q/mc is GREATER for a smaller mass of water.
for i I am less sure. I thought as follows: heat change is per mole of substance. If we have more moles the heat change will be greater.
I am not so sure on this though - please could someone confirm if I am correct for both i and ii