Write a testable question you can explore to learn more about acids and bases.

Home :FAQ

Home :FAQAcids and bases:

Home :FAQAcids and bases:Frequently asked questions

Basic concepts and definitions

Why are acids called proton donors?

Why can't hydrogen ions exist by themselves?

How is [H+] found from pH?

Is a negative pH possible?

How can you tell if a compound is an acid?

What is pH?

Buffer solutions

What is the buffer system in buffered aspirin?

Which species in a NH4Cl/NH3 buffer reacts with acid?

How do I prepare a phosphate buffer solution with a specific

pH?

Calculating pH

How does hydrolysis enter into pH calculations?

How do I calculate the pH for a strong acid solution after dilution?

Equilibrium constants

How is pKa related to pKb?

Where can I find pKa's on the Web?

Indicators

What indicators change from clear to colored?

What household substances can be used as acid/base indicators?

What is methyl orange? How is it made?

What are some natural acid/base indicators?

What are some novel ways to use indicators (besides titrations)?

What is a universal indicator?

Are all acid/base indicators water-based?

Neutralization reactions

Which reacts more vigorously with limestone: glacial acetic acid or 5% acetic acid?

How can copper sulfate be made by a neutralization reaction?

What are the products of the reaction between limestone and acidic water?

Is any toxic gas produced when acetic acid and limestone react?

Strong and weak acids and bases

Is ammonia a weak base?

Which has the highest pH: 0.1 M NaC2H3O2, 0.1 M NaCl, or 0.1 M NaNO3?

How can strong and weak acids be distinguished using indicators?

Is the salt of a weak acid and a weak base considered a weak acid or a weak base?

Can you classify acids as strong or weak from their formulas alone?

Titrations

How can I adjust the pH of an HNO3 solution by adding KOH?

How can I compare the neutralizing capabilities of antacids?

What is the pH at the equivalence point an HF/NaOH titration?

How do I compute the pH at the equivalence point in the titration of acetic acid with NaOH?

Can I determine the pKa's for oxalic acid from a titration curve?

How is the the pKa of acetic acid found in this experiment?

Why should temperature be specified when doing weak acid pH calculations?

Can I determine the pKa's for oxalic acid from a titration curve

sadness is not good

explanation:

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.