3 years ago

In potassium phosphate what is the percent composition of oxygen?

Chemistry

1 answer:

Alinara [238K]3 years ago

6 0

Answer:

The answer for this question is defenitely A

Explanation:

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Is ammonia an alkali or base?

Alchen [17]

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3 years ago

The equilibrium constant, Kc, for the following reaction is 83.3 at 500 K. PCl3(g) Cl2(g) PCl5(g) Calculate the equilibrium conc

Alik [6]

Answer:

$[PCl_3]=[Cl_2]=0.068M$

$[PCl_5]=0.385M$

Explanation:

Hello!

In this case, since the equilibrium expression for the considered equation is:

$Kc=\frac{[PCl_5]}{[Cl_2][PCl_3]}$

Which can be written in terms of the reaction extent and the ICE chart and the initial concentrations of 0.453 M as shown below:

$83.3=\frac{x}{(0.453M-x)(0.453M-x)}$

We can solve for x as follows:

$x=0.385M$

In such a way, we obtain the following concentrations at equilibrium:

$[PCl_3]=[Cl_2]=0.453M-0.385M=0.068M$

$[PCl_5]=0.385M$

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Answer:

Hello There!!

Explanation:

The answer is B.Year

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