At a certain temperature the value of the equilibrium constant, Kc, is 1.27 for the reaction. 2As (s) + 3H2 (g) ⇌ 2AsH3 (g) What is the value of Kc for the following reaction? AsH3 (g) ⇌ As (s) + 3/2H2 (g)

Explanation:

Hello,

In this case, the law of mass action for the first reaction turns out:

Now, for the second reaction is:

Therefore, by applying square root for the first reaction, one obtains:

Finally, since Kc is asked for the inverse reaction, one modifies the previous equation as:

Best regards.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.