2.6 Study Guide Flashcards
What is concentration?
A solution that is more or less. It’s the density of your solute.
What is pH?
“potential Hydrogen.” It measures hydronium ions on a logarithmic (exponents) scale.
What is pOH?
A measure of the hydroxide ion concentration of a solution.
What is hydroxide ion?
OH negative. They are an oxygen and hydrogen atom held together by a single covalent bond.
What is hydronium ion?
The ion H3O+, consisting of a protonated water molecule and present in all aqueous acids.
What is an acid?
A molecule or ion capable of either donating a proton or forming a covalent bond with an electron pair.
What is a base?
Substances that react with acids. They can neutralize the the acid by reacting with hydrogen ions.
What is dilute?
Lots of solvent. The opposite of concentration. Less solute.
What are the pOH, H+, and OH- if the pH is 10, and is it an acid, neutral or base?
- pOH = 4.
- H+ = 1x10^-10.
- OH- = 1x10^-4.
- Base.
What are the pH, H+, and OH- when the pOH is 2, and is it an acid, neutral, or base?
- pH = 12.
- H+ = 1x10^-2.
- OH- = 1x10^-12.
- Acid.
What are the pH, pOH, and OH- when the H+ is 1x10^-7, and is it an acid, neutral, or base?
- pH = 7.
- pOH = 7.
- OH- = 1x10^-7.
- Neutral.
What are the pH, pOH, and H+ when the OH- is 1x10^-5, and is it an acid, neutral, or base?
- pH = 9.
- pOH = 5.
- H+ = 1x10^-9.
- Base.
How are pH and pOH related?
They are inversely related.
How many times lower or higher [H3O+] in a pH of 9 than a pH of 12?
10^3.
How many times lower or higher [H3O+] in a pH of 4 than a pH of 10?
10^6.
