Table of Contents
- 1 Is the following sentence true or false a strong acid always has a lower pH than a weak acid?
- 2 Is the pH of an acid-base neutralization always 7 Why or why not?
- 3 Which of the following substances produces hydrogen ions H + When mixed with water?
- 4 How will you differentiate acids from bases?
- 5 Does neutralization always mean pH 7?
- 6 Is the pH always 7 at the equivalence point?
- 7 What solution has the highest H ion concentration?
- 8 What happens when you mix an acid with a base?
- 9 Can a strong base be replaced by a weak acid?
- 10 Can a basic compound be changed to an acidic compound?
Is the following sentence true or false a strong acid always has a lower pH than a weak acid?
A strong acid always has a lower pH than a weak acid. Strong acids and bases are weak electrolytes because they dissociate or ionize almost completely in water.
Is the pH of an acid-base neutralization always 7 Why or why not?
Is the pH of an acid-base neutralization always 7? No, it could be close to 7 because one might be a little more acidic or basic. What is the difference between a strong acid and a weak acid? A strong acid dissociate to form hydrogen ions in solution.
Which statement describes an acidic solution on the pH scale?
pH is usually (but not always) between 0 and 14. Knowing the dependence of pH on [H+], we can summarize as follows: If pH < 7, then the solution is acidic. If pH = 7, then the solution is neutral.
Which of the following substances produces hydrogen ions H + When mixed with water?
Acids, Bases and Solutions – Mrs. Henderson
| A | B |
|---|---|
| Any substance that produces hydrogen ions in water | acid |
| What is the hydroxide ion? | a negative ion, made of oxygen and hydrogen |
| any substance that produces hydroxide ions in water | base |
| How cn you tell the concentration of hydrogen ions in a solution? | pH scale |
How will you differentiate acids from bases?
Acid is a kind of chemical compound that when dissolved in water gives a solution with H+ ion activity more than purified water. A base is an aqueous substance that donates electrons, accept protons or release hydroxide (OH-) ions. An acid is a proton donor. While a base is a proton acceptor.
Do strong acids always completely dissociate in water?
For all practical purposes, strong acids completely dissociate in water. That is the definition: A strong acid is an acid that completely dissociates in water. Strong acids have a large dissociation constant, so they dissociate completely in water.
Does neutralization always mean pH 7?
Strong Acid-Strong Base Neutralization Neutral pH means that the pH is equal to 7.00 at 25 ºC. At this point of neutralization, there are equal amounts of OH− and H3O+. When a strong acid completely neutralizes a strong base, the pH of the salt solution will always be 7.
Is the pH always 7 at the equivalence point?
At the equivalence point, all of the weak acid is neutralized and converted to its conjugate base (the number of moles of H+ = added number of moles of OH–). However, the pH at the equivalence point does not equal 7. This is due to the production of conjugate base during the titration.
Why are hydrogen ions acidic?
In order to be acidic then, a substance must contain hydrogen, in a form that can be released into water. On the other hand, substances such as hydrochloric acid, HCl, are held together by polar ionic bonds and when placed into water the hydrogen will break away to form hydrogen ions, making the liquid acidic.
What solution has the highest H ion concentration?
Acids, bases, pH, and buffers
- An acidic solution has a high concentration of hydrogen ions (H +start superscript, plus, end superscript), greater than that of pure water.
- A basic solution has a low H +start superscript, plus, end superscript concentration, less than that of pure water.
What happens when you mix an acid with a base?
A similar outcome occurs when one or both of the reactants are ‘weak’. A weak acid or weak base doesn’t fully break apart (dissociate) in water, so there may be leftover reactants at the end of the reaction, influencing the pH.
What is the pH of an acid base reaction?
Understanding the Acid-Base Chemical Reaction. First, it helps to understand what acids and bases are. Acids are chemicals with a pH less than 7 that can donate a proton or H + ion in a reaction. Bases have a pH greater than 7 and can accept a proton or produce an OH – ion in a reaction.
Can a strong base be replaced by a weak acid?
Strong base HO can be consumed by weak acid The strong base is replaced by weak base HCI in, NH4 0 out NaOH in, NaF out
Can a basic compound be changed to an acidic compound?
Using such a manipulation, an acidic or basic compound that may be ether soluble and water insoluble can be changed to be ether insoluble and water soluble by carrying out an acid-base reaction. The solubilities of acidic and basic compounds can thus be changed at will.