Question at position 29 What distinguishes a weak acid from a strong acid?Weak acids completely dissociate into ions in solutionWeak acids have higher acidity than strong acidsWeak acids release more hydrogen ions in water than strong acidsWeak acids only partially ionize in water

Question

BlackTom AI · Accepted Answer

To begin, let's examine what is being asked: what distinguishes a weak acid from a strong acid in aqueous solution.
Option 1: 'Weak acids completely dissociate into ions in solution' This describes strong acids, not weak acids, since strong acids ionize completely while weak acids do not. The claim here contradicts the defining behavior of strong acids, making this option incorrect.
Option 2: 'Weak acids have higher acidity than strong acids' Acidity depends on the extent of dissociation and the resulting hydronium ion concentration; strong acids yield more H3O+ in solution at the same concentration. Therefore, saying weak acids are more acidic is misleading and false for typical concentration comparisons.
Option 3: 'Weak acids release more hydrogen ions in water than strong acids' This would imply a greater degree of ionization for weak acids, which is opposite of the actual situation. Weak acids release fewer H+ ions than strong acids at the same concentration, so this option is incorrect.
Option 4: 'Weak acids only partially ionize in water' This is the fundamental distinction: weak acids establish an equilibrium where only a fraction dissociates into H+ (or H3O+) and A−, leaving undissociated HA molecules in solution. This partial ionization explains their relatively lower degree of dissociation compared to strong acids, aligning with the standard definition of a weak acid.
Across the choices, the core concept hinges on dissociation extent in water. The statement that most accurately captures this characteristic is about partial ionization, not complete dissociation, not higher acidity, and not releasing more hydrogen ions. Thus, the correct interpretation is that weak acids only partially ionize in water.

Question at position 29 What distinguishes a weak acid from a strong acid?Weak acids completely dissociate into ions in solutionWeak acids have higher acidity than strong acidsWeak acids release more hydrogen ions in water than strong acidsWeak acids only partially ionize in waterSingle choice

Similar Questions

Question at position 2 Which series is the correct order of decreasing acid strength for each group of acids? (Strongest acid > > > weakest acid) HClO4 > HClO3 > HClO2 > HClO HClO3 > HClO4 > H2SO4 > HNO3 HF > HCl > HBr > HI H2S > H2Te > H2Se > H2O

If Acid A has a pKa of 3.2 and Acid B has a pKa of 8.0, which is the stronger acid?

Which of the following two acids is a stronger acid? Malonic Acid, HOOCCH2COOH, 𝐾 𝑎 = 1.5 × 10 − 3 Cyanic Acid, HOCN, 𝐾 𝑎 = 3.5 × 10 − 4

The results of an experiment to measure the relative strength of four acids are shown below: Which list shows the four acids in order of increasing strength?

The following table shows information about solutions of two substances, X and Y: Based on the information provided, which of the following statements about X and Y is correct?

The following table shows information about solutions of two substances, X and Y: Based on the information provided, which of the following statements about X and Y is correct?

Which solution has a lower pH? Solution A Solution B 0.090 M HNO3 0.090 M HF

Which statement best describes a weak acid?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler