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Yuliya22 [10]
3 years ago
13

During an experiment, a student observes the formation of a precipitate. Why does this indicate that a chemical reaction is like

ly occurring? 1)A solid forms, and there is a change of color. 2)A gas forms, and there is a change of color. 3)A solid forms, and light is emitted. 4)A gas forms, and light is emitted.
Chemistry
2 answers:
eduard3 years ago
6 0
The right answer for the question that is being asked and shown above is that: "<span>2)A gas forms, and there is a change of color. " </span>During an experiment, a student observes the formation of a precipitate. a chemical reaction is likely occurring because <span>A gas forms, and there is a change of color.</span>
GuDViN [60]3 years ago
3 0

Answer:

A.

Explanation:

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At a given temperature, the elementary reaction A ---&gt;B in the forward direction is first order in A with a rate constant of
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The value of the equilibrium constant for the reaction A ⇒ B is Kc = 1.72 × 10³.

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For the reaction A ⇒ B, the equilibrium constant (Kc) is equal to the forward rate constant (kf) divided by the reverse rate constant (ki).

Kc=\frac{kf}{ki} =\frac{1.60 \times 10^{2} s^{-1}   }{ 9.30 \times 10^{-2} s^{-1}} =1.72 \times 10^{3}

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