D) +1 27. What is the oxidation number of phosphorus inPO-?
a) -3
b) +5
c)-8
d) +3
28
LU01
10​

I guess letter A

Explanation:

but the real number of oxidation of PO-

p=1

O= -2

can you explain, how can I answer this question?

I know how to get the oxidation but the problem is there nothing to the options.

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24

answer seismograph;