/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 57 Which of the following \(\mathrm... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 16: Problem 57

Which of the following \(\mathrm{pH}\) values indicate an acidic solution at \(25^{\circ} \mathrm{C} ?\) Which are basic and which are neutral? a. \(4.6\) b. \(7.0\) c. \(1.6\) d. \(10.5\)

Short Answer

Expert verified
a and c are acidic, b is neutral, and d is basic.

Step by step solution

01

Understanding pH Scale

The pH scale ranges from 0 to 14 and is used to measure how acidic or basic a solution is. A pH value less than 7 indicates an acidic solution, a pH value of exactly 7 indicates a neutral solution, and a pH value greater than 7 indicates a basic solution.
02

Determine pH of Each Option

Let's analyze each provided pH value and determine whether it is acidic, neutral, or basic: - a. 4.6: Since 4.6 is less than 7, this value is acidic. - b. 7.0: Since 7.0 is exactly equal to 7, this value is neutral. - c. 1.6: Since 1.6 is less than 7, this value is acidic. - d. 10.5: Since 10.5 is greater than 7, this value is basic.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Understanding Acidic Solutions
An acidic solution is one that has a pH value less than 7. This means it has a higher concentration of hydrogen ions (H鈦�) compared to pure water. Such solutions include substances like vinegar and lemon juice. These substances tend to have a sour taste and can be corrosive. For example, in the exercise, a pH of 4.6 and 1.6 are considered acidic because they are below the neutral point of 7. It's important to remember that the lower the pH number, the stronger the acid. For instance:
  • A pH close to 0 indicates a strong acid.
  • A pH closer to 7 would indicate a weaker acid.
Understanding this concept helps in many real-world applications such as food science and environmental monitoring, where recognizing acidity can be crucial.
Basics of Basic Solutions
A basic solution, also known as an alkaline solution, has a pH value greater than 7. Such solutions have a higher concentration of hydroxide ions (OH鈦�) than hydrogen ions. Common examples include household cleaning agents like ammonia and baking soda. In the given exercise, a pH of 10.5 falls under this category, signifying it has a lower concentration of hydrogen ions compared to neutral water. Key characteristics of basic solutions include:
  • A bitter taste, such as that in soap.
  • A slippery feel, often experienced with cleaning products.
Basic solutions play critical roles in industrial processes, agriculture, and even in maintaining the pH of blood within the human body.
Exploring Neutral Solutions
Neutral solutions feature a pH level of 7, which means the concentrations of hydrogen ions and hydroxide ions are balanced. Pure water at 25掳C is the most common example of a neutral solution. In the exercise, the pH of 7.0 was identified as neutral. Such solutions neither have the properties of acids nor bases. In practice, neutrality is important because:
  • Neutral pH is essential for drinking water quality and environmental health.
  • In chemical experiments, a neutral solution is often sought after for accurate reactions.
Understanding neutral solutions is fundamental in biology, environmental science, and chemistry, where maintaining balance in pH is vital for processes and life cycles.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Pure liquid hydrogen fluoride ionizes in a way similar to that of water. a. Write the equilibrium reaction for the self-ionization of liquid hydrogen fluoride. b. Will sodium fluoride be an acid or a base in liquid hydrogen fluoride? Why? c. Perchloric acid is a strong acid in liquid hydrogen fluoride. Write the chemical equation for the ionization reaction. What is the conjugate acid in this medium?

A wine was tested for acidity, and its \(\mathrm{pH}\) was found to be \(3.85\) at \(25^{\circ} \mathrm{C}\). What is the hydronium-ion concentration?

For each of the following, write the complete chemical equation for the acid- base reaction that occurs. Describe each using Br酶nsted language (if appropriate) and then using Lewis language (show electron-dot formulas). a. The \(\mathrm{ClO}^{-}\) ion reacts with water. b. The reaction of \(\mathrm{NH}_{4}{ }^{+}\) and \(\mathrm{NH}_{2}^{-}\) in liquid ammonia to produce \(\mathrm{NH}_{3}\).

A solution is \(0.020 \mathrm{M} \mathrm{HNO}_{3}\) (nitric acid). What is the hydronium-ion concentration at \(25^{\circ} \mathrm{C}\) ? What is the hydroxideion concentration at \(25^{\circ} \mathrm{C}\) ?

Coal and other fossil fuels usually contain sulfur compounds that produce sulfur dioxide, \(\mathrm{SO}_{2}\), when burned. One possible way to remove the sulfur dioxide is to pass the combustion gases into a tower packed with calcium oxide, \(\mathrm{CaO}\). Write the equation for the reaction. Identify each reactant as either a Lewis acid or a Lewis base. Explain how you arrived at your answer.
See all solutions

Recommended explanations on Chemistry Textbooks

Ionic and Molecular Compounds

Read Explanation

Kinetics

Read Explanation

Physical Chemistry

Read Explanation

Chemistry Branches

Read Explanation

Making Measurements

Read Explanation

The Earths Atmosphere

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.