You can consult your Periodic Table to find the atomic weights of each element. Question 5
What is the relative atomic mass of
the element?
Isotope ?-90 has an atomic mass of 90. It has a relative
abundance of 51.5%.
Isotope ?-91 has an atomic mass of 91. It has a relative
abundance of 11.2%.
(Round to the first decimal point)
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Isotope ?-92 has an atomic mass of 92. It has a relative
abundance of 17.1%.
Isotope ?-94 has an atomic mass of 94. It has a relative
abundance of 17.4%.
Isotope ?-96 has an atomic mass of 96. It has a relative
abundance of 2.8%.
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here we have to get the change of moles on decrease the volume of the reaction in gas phase.

the   per the given options it will decrease by (d) 11-50%

we know, on decreasing the volume of the gas phase reaction the reaction moves to the product side.

the reaction:                     so₂cl₂ (g) = so₂ (g) + cl₂ (g)         total

the moles at equilibrium:   1 - α                 α               α           = 1+α

concentrations:                   1 - α               α               α           = 1 + α

(concentration = moles/volume, as volume is 1 l)

(where α is the degree of dissociation)

now the dissociation constant in terms of concentration is :

=  

or,

or,   = (at v = 1l)

the reaction:                     so₂cl₂ (g) = so₂ (g) + cl₂ (g)         total

the moles at equilibrium:   1 - α                 α               α           = 1+α

concentrations:               (1 - α)/0.5           α/0.5         α/0.5       = (1 + α)/0.5

thus, the dissociation constant in terms of concentration is :

or,  

=  

so, the change of 1 : 1/0.5

or, 1: 2

thus it will decrease by 50%.

or, as per the given options it will decrease by 11-50%

2b2t

explanation:

2b2t