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Afina-wow [57]
3 years ago
13

Explain why alchemy is not as reliable as modern day science

Chemistry
1 answer:
Ksivusya [100]3 years ago
3 0

Answer:

Explanation:

Alchemy is the forerunner of modern chemistry practiced during the medieval times. Chemists of those times were known and called alchemists.

These chemists had a very shallow knowledge of chemistry but were able to produce a wide range of chemicals.

  • Alchemy predates the scientific method.
  • Modern science is investigative and relies on the precepts of detailed and methodical process.
  • Modern day chemistry is a vertiginous study with more depth.
  • It seeks to provide details into reasons why certain chemical matter exists as they are. Or how combinations in reactions takes place.
  • Alchemy does not follow the scientific method in its investigation
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Answer:

D) cutting the concentrations of both NOBr and NO in half

Explanation:

The equilibrium reaction given in the question is as follows -

2NOBr ( g ) ↔  2NO ( g ) + Br₂ ( g )

The equilibrium constant for the above reaction can be written as -

K = [ NO ]² [ Br₂ ] / [ NOBr ] ²

Therefore from the condition given in the question , the changes that will not affect the equilibrium will be , reducing the concentration of both NOBr and NO to half ,

Hence ,

the new concentrations are as follows -

[ NoBr ] ' = 1/2 [ NoBr ]

[ NO ] ' = 1/2  [ NO ]

Hence the new equilibrium constant equation can be written as -

K ' = [ NO ] ' ² [ Br₂ ] / [ NOBr ]  ' ²

Substituting the new concentration terms ,

K ' = 1/2  [ NO ] ² [ Br₂ ] / 1/2 [ NoBr ]  ²

K ' = 1/4  [ NO ] ² [ Br₂ ] / 1/4 [ NoBr ]  ²

The value of 1 / 4 in the numerator and the denominator is cancelled -

K ' =   [ NO ] ² [ Br₂ ] /  [ NoBr ]  ²

Hence ,

K' = K

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