Question

What can be concluded about the values of $△H$ and $△S$ from this graph?

• A. $△H>0,△S>0$
• B. $△H>0,△S<0$
• C. $△H<0,△S>0$
• D. $△H<0,△S<0$

Answer 1

The correct option is A $△H>0,△S>0$

$△G=△H-T△S$
$△G=-T△S+△H$
On camparing it to
y=mx + c

Graph of $△G$ and T will be a staright line.
$-△S=\left(slope\right)=negative$
$\therefore △S=positive$

From graph
intercept, c = $△H$
since c>0
$\Rightarrow △H>0$