So Basic
When water is being mixed with an acid, it will act like a base. This means that water is this type of substance.
Amphiprotic
Name a common amphiprotic substance mentioned in this module.
*For double points define amphiprotic
Water
Amphiprotic substances can act as either acids or bases.
H+ can also be known as this.
What is a proton?
Write the equation for molarity.
M = the number of moles of solute divided by the number of liters of solution
*see page 330
Identify the base in this equation:
H2CO3 + H2O --> H3O+ +HCO3-
H2CO3 is the acid and water is the base
Extra Practice Problem #1
Acids that can donate 2 protons are known as this.
What is diprotic?
*For double points, name a common acid that's diprotic.
This changes color as it goes from an acid to a base.
What is an indicator?
When the compound Al2(CO3)3 dissolves in water, what ions form and how many of each ion are present?
2 Al3+ ions and 3 CO32- ions
Study guide #7
Name the properties of a base.
1. Bases taste bitter
2. Bases are slippery to the touch when dissolved in water.
3. Bases turn litmus paper blue.
Name the properties of acids.
1. Acids taste sour.
2. Acids are covalent compounds that conduct electricity when added to water.
3. Acids turn blue litmus paper red.
When generalizing the acid-base reaction this general guideline is often used.
acid + base -->salt + water
*for double points: scientists often use salt to refer to what
answer:textbook p. 326
Write the balanced equation for the reaction of HBr with water.
HBr + H2O --> H3O+ + Br-
Practice problem #4
Acids are molecules that donate these, while bases are molecules that accept these.
Protons
Determine the base in this reaction:
H3PO4 (aq) + 3KOH (aq) --> 3H2O (l) + K3PO4 (aq)
KOH
OYO 9.3
*Acids are covalent, so KOH can't be an acid since its ionic
Identify the acid and base in the following reaction:
KOH + C2H6O --> KC2H5O + H2O
Extra Practice Problem #2
KOH is the base
C2H6O is the acid
Write the dilution equation.
M1V1 = M2V2
*For double points complete extra practice problem #8