00:01
We assume that the heat created by the reaction or the dissolving of calcium chloride will be equal to the negative of the heat of the solution.
00:15
The negative because the reaction is going to release heat and the solution will absorb the heat.
00:20
So q of the reaction will be equal to the amount of calcium chloride that's dissolving, 8 .00 grams, converted into moles, 1 mole calcium chloride, has a mass equal to 1 mole calcium and 2 moles of chlorine, 110 .98 grams.
00:59
We then multiply that by the delta h for the dissolution process.
01:07
They tell us that is negative 82 .8 kilojoules per mole calcium chloride.
01:20
This then gives us kilojoules, which we can convert to joules by multiplying by a thousand, and all of that is going to be equal to negative q of the solution.
01:37
Q of the solution is going to be equal to the heat capacity of the solution, 4 .184 joules per gram degree celsius.
01:47
So that's why i converted this to joules because here we have units of joules multiplied by the mass of the solution...