Question

select the correct answer from each drop-down menu. the reaction between zinc (zn) and hydrogen chloride (hcl) produces zinc chloride (zncl₂), hydrogen (h₂) gas, and heat. if more heat is removed from the reaction, how does the rate of reaction change to counter the action? zn + 2hcl ⇌ zncl₂ + h₂ + heat the rate of the dropdown and produces more dropdown. dropdown options: reverse reaction increases, forward reaction decreases, forward reaction increases. buttons: reset, next.

Explanation:

This is a chemistry (Natural Science subfield) problem related to Le Chatelier's principle. The reaction \( \text{Zn} + 2\text{HCl}
ightleftharpoons \text{ZnCl}_2 + \text{H}_2 + \text{heat} \) is exothermic (releases heat). When heat is removed (a stress on the system), the system will shift to counteract this. According to Le Chatelier's principle, for an exothermic reaction, removing heat (decreasing temperature) will favor the forward reaction to produce more heat (and products). So the rate of the forward reaction increases, and it produces more products (like \( \text{ZnCl}_2 \), \( \text{H}_2 \), or heat - but in terms of the reaction, the forward reaction produces more of the products of the forward reaction, which are \( \text{ZnCl}_2 \), \( \text{H}_2 \), and heat). The first dropdown: the correct option is "forward reaction increases" because removing heat (a product of the forward reaction, since it's exothermic) will make the system try to produce more heat by favoring the forward reaction. The second dropdown would be related to the products of the forward reaction, but since the question is about the rate change and what is produced more, the first part is about the forward reaction rate increasing.

Answer:

The rate of the \(\boldsymbol{\text{forward reaction increases}}\) and produces more (products of the forward reaction like \(\text{ZnCl}_2\), \(\text{H}_2\), or heat). For the first dropdown, the correct option is: forward reaction increases.