# Sulfur dioxide emissions in power plant stack gases may react with carbon monoxide as follows: SO_2

Sulfur dioxide emissions in power plant stack gases may react with carbon monoxide as follows: SO_2 (g) + 3CO(g) rightarrow 2CO_2 + COS(g) Write an equation relating each of the following pairs of rates:

a. The rate of formation of CO_2 to the rate of consumption of CO
b. The rate of formation of COS to the rate of consumption of SO_2
c. The rate of consumption of CO to the rate of consumption of SO_2

## This Post Has 2 Comments

1. rubyr9975 says:

The middle one is proportional

a.

$\frac{1}{2} \frac{dC_{CO_2}}{dt} =-\frac{1}{3} \frac{dC_{CO}}{dt}$

b.

$\frac{dC_{COS}}{dt}=- \frac{dC_{SO_2}}{dt}$

c.

$-\frac{1}{3} \frac{dC_{CO}}{dt}=\frac{dC_{SO_2}}{dt}$

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

$SO_2 (g) + 3CO(g) \rightarrow 2CO_2 + COS(g)$

For which rates of consumption are related as follows, taking into account the change in the concentration with respect to the time and each species stoichiometric coefficient:

$-\frac{1}{3} \frac{dC_{CO}}{dt}=- \frac{dC_{SO_2}}{dt}=\frac{1}{2} \frac{dC_{CO_2}}{dt} =\frac{dC_{COS}}{dt}$

For the given requirements, each rate of formation turns out as shown below:

a.

$\frac{1}{2} \frac{dC_{CO_2}}{dt} =-\frac{1}{3} \frac{dC_{CO}}{dt}$

b.

$\frac{dC_{COS}}{dt}=- \frac{dC_{SO_2}}{dt}$

c.

$-\frac{1}{3} \frac{dC_{CO}}{dt}=\frac{dC_{SO_2}}{dt}$

Best regards.