Question

which of the following statements correctly relates the concentration of h+ to ph? when concentration of h+ ions increase, the ph of the solution increases. when concentration of h+ ions decrease, the ph of the solution increases. when concentration of h+ ions decrease, the ph of the solution decreases. none is correct two of them are correct classify the following reaction: cl₂ + zni₂ → zncl₂ + i₂.

Explanation:

Step1: Recall pH formula

The formula for pH is $pH = -\log[H^+]$.

Step2: Analyze relationship

As the concentration of $H^+$ ions $[H^+]$ increases, the value of $\log[H^+]$ increases. Since $pH = -\log[H^+]$, the pH decreases. When the concentration of $H^+$ ions decreases, $\log[H^+]$ decreases and since $pH=-\log[H^+]$, the pH increases.

Step1: Identify reaction type

In this reaction, $Cl_2$ (a more reactive non - metal) displaces $I_2$ from $ZnI_2$. A single - displacement reaction is a reaction in which one element replaces another element in a compound. Here, chlorine replaces iodine in zinc iodide.

Answer:

When concentration of H+ ions decrease, the pH of the solution increases.

For the reaction $Cl_2 + ZnI_2
ightarrow ZnCl_2 + I_2$: