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FinnZ [79.3K]
3 years ago
9

The equation of state corresponding to 8 gm of Oxygen (O2) is : PV=RT,RT/4,RT/3 or RT/2?

Chemistry
2 answers:
nexus9112 [7]3 years ago
8 0
In PV = nRT, n is the number of moles. When 8 grams of oxygen are present,
n = 8/32 = 1/4
So PV = RT/4
Stels [109]3 years ago
6 0

Answer: Option (b) is the correct answer.

Explanation:

According to ideal gas equation, the product of pressure and volume is equal to the product of universal gas constant and absolute temperature.

Mathematically,      PV = nRT       ........... (1)

where       P = pressure

                V = volume

               n = number of moles

              R = gas constant

              T = temperature

Also, number of moles = \frac{mass of atom}{molar mass of the atom}

Therefore, number of moles of oxygen atom will be as follows.

    Number of moles = \frac{mass of atom}{molar mass of the atom}

                                  = \frac{8}{32}

                                  = \frac{1}{4}

Thus, putting the value of n into equation (1) as follows.

                                PV = nRT

      or                      PV = \frac{1}{4}RT

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The question is incomplete, the complete question is:

A chemist prepares a solution of vanadium (III) chloride (VCl3) by measuring out 0.40g of VCl3 into a 50.mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Cl− anions in the chemist's solution. Be sure your answer is rounded to the correct number of significant digits.

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But 1 mole of VCl3 contains 3 moles of anions

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