00:01
So in this question, let's find out the value of the change in therapy for that reaction as to s -o -4 given as to s -2 and this and the one of the three equations are given to us here and the respectively values are also given to the stelbex.
00:15
Start from the given condition the first part which of the following equation can be reversed.
00:19
So first part answer should be, we're able to reverse the equation first to write the required solution using h -slaw.
00:27
So that would be equal to reverse how s -2 -s -o -4 we reverse the equation at 3 equation a, reverse it, equation a adds to s of 4, give rise to s2s plus o2 to o2 here.
00:47
So the value of delta h will become negative to positive here, positive to 35 .5 kilojog.
00:58
So now for the second part, add the equation a to equation b and c what we call this equation b.
01:06
This is equation c.
01:07
So when you add these equations here, but we caught that the result should be equal to simply written it like this.
01:18
At s2...