Question

If 7.0 moles of Y is placed in a container and allowed to
react with X until equilibrium is reched according to the
reaction :
2X+Y2Z
It is found that the equilibrium mixture contains 8.0 moles
of X and 5.0 moles of Y. How many moles of X were
present in the original container ?
(a) 10
(b) 12
(c) 14
(d) 16​

Answer 1

Answer:

b) 12

Explanation:

The equation:

2X + Y => 2Z

Let X moles of X be taken

please refer to the image attached

Hope you understand