Question

25110717h = 4869301 & p = 5a2f8606
final exam 2025
acid base
use the following information to answer the next question:
given below are the ph or poh values for four solutions all with the exact same
concentration.

1. when the solutions above are ranked in increasing order of h₃o⁺ concentration,

the order is

(record your answer in the numerical - response section below)
your answer:
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Explanation:

Step1: Calculate \( [H_3O^+] \) for each solution

• For solution 1: \( [H_3O^+]=10^{-pH} \). Given \( pH = 2 \), so \( [H_3O^+]=10^{-2}\space M\)
• For solution 2: First find \( pH\) using \(pH + pOH=14\). Given \(pOH = 3\), then \(pH=14 - 3=11\). So \( [H_3O^+]=10^{-11}\space M\)
• For solution 3: Given \( pH = 5 \), so \( [H_3O^+]=10^{-5}\space M\)
• For solution 4: First find \(pH\) using \(pH + pOH=14\). Given \(pOH = 13\), then \(pH=14 - 13 = 1\). So \( [H_3O^+]=10^{-1}\space M\)

Step2: Rank the solutions

Since \(y = 10^{-x}\) is a decreasing function of \(x\). The order of \( [H_3O^+]\) from smallest to largest:
\(10^{-11}<10^{-5}<10^{-2}<10^{-1}\)

Answer:

\(2\space 3\space 1\space 4\)