Question

In the Ellingham diagram for oxides, the general trend for the graphs for metal to metal oxide is

• A. They slope upwards
• B. They are all parallel to the $\Delta G^{\circ }$ = 0 horizontal axis
• C. There is no common trend
• D. They slope downwards like the $2C+O_2$ $\to$ 2CO line

Answer 1

The correct option is A

They slope upwards

This one is simple. $\Delta G^{\circ }$ increases (becomes less negative) with the increase in temperature and the general trend is that the lines slope upward.