Acids & Bases 2 Flashcards
(20 cards)
What color does blue litmus paper turn in an acid?
Red
What is the pH of a neutral ionic compound?
7
How do acids react with active metals like Mg(s)?
They react to produce hydrogen gas.
What is the taste and feel of a base?
Tastes bitter and feels slippery.
What is the conductivity of neutral molecular compounds?
They are non-electrolytes and do not conduct electricity.
What defines a weak acid?
Only partially ionizes in water, usually less than 5%.
What is a strong base?
A base that dissociates completely in water (100% dissociation), with high conductivity and high pH.
Name three strong bases.
NaOH, KOH, Ca(OH)₂
What defines a weak base?
Only partially dissociates in water to produce OH⁻ ions.
Example: ammonia (NH₃).
What is a strong electrolyte?
A substance that produces many ions in solution and conducts electricity well.
Is glucose a strong electrolyte?
No, it’s a non-electrolyte with no ions in solution.
How does NH₄OH behave in water?
Weak base; few ions are produced, so it’s a weak electrolyte.
What is a monoprotic acid?
Produces one mole of H⁺ per mole of acid. Reacts once with water.
Examples: HCl, HNO₃.
What is a diprotic acid?
Produces two moles of H⁺ per mole of acid. Reacts twice with water.
Examples: H₂SO₄, H₂CO₃.
What is a triprotic acid?
Produces three moles of H⁺ per mole of acid. Reacts three times with water.
Example: H₃PO₄.
What is a titrant?
The solution in the buret that is added to the sample.
Define equivalence point in a titration.
The point where exactly enough titrant has been added to completely react with the sample.
What is a standard solution?
A solution of known concentration.
What is the role of a primary standard?
A highly pure substance used to prepare a standard solution with high accuracy.
What does a buret do in titration?
A precisely marked glass tube used to deliver titrant with precision.
