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3 years ago

Which of the following is NOT considered a branch of Chemistry?

Chemistry

2 answers:

zimovet [89]3 years ago

8 0

Answer:

pure chemistry

Explanation:

It is the consideration of the facts and theories of chemistry in their purely scientific relations. Therefore it is not considered to be a branch of chemistry because it doesn't necessarily refer to their practical application or mere utility.

mestny [16]3 years ago

4 0

Answer:

Pure Chemistry -- is NOT considered a branch of Chemistry.

Explanation:

Second question is number 4.

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2 years ago

At the equilibrium point in the decomposition of phosphorus pentachloride to chlorine and phosphorus trichloride, the following

Hitman42 [59]

Answer: $K_{eq}$ for the reaction is 5.55

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.

The given balanced equilibrium reaction is,

$PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)$

At eqm. conc. (0.010) M (0.15) M (0.37) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[Cl_2]\times [PCl_3]}{[PCl_5]}$

Now put all the given values in this expression, we get :

$K_c=\frac{(0.37)\times (0.15)}{(0.010)}$

$K_c=5.55$

Thus the $K_{eq}$ for the reaction is 5.55

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3 years ago

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3 years ago

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