We measure the energy transferred as ENTHALPY CHANGE. (4.1)
Back
Card 8
Front
For an exothermic reaction ΔH is negative. Why? (4.1)
Back
Card 9
Front
For an endothermic reaction ΔH is positive. Why? (4.1)
Back
Card 10
Front
Like most, ΔH also varies according to the conditions. In particular, temp,pressure and concentration of solutions, so we choose standard conditions: (4.1)
Back
Card 11
Front
Measuring the temperature of the water and knowing its mass and specific heat capacity, we can work out how much energy was transferred to/from the water. (4.1)
