unit 4

Question 1

Which acids always ionize in water (break apart in complete ionic equation)?

Answer 1

HNO3, H2SO4, HClO4, HClO3, H+group 17 Cl to Br (HCl, HBr, HI)

Question 2

Which bases always ionize in water (break apart in complete ionic equation)?

Answer 2

Group 1 Li to Cs + OH (LiOH, NaOH, KOH, RbOH, CsOH), Group 2 Ca to Ba + (OH)2 (Ca(OH)2, Sr(OH)2, (Ba(OH)2)

Question 3

What does not ionize?

Answer 3

Non-electrolytes and weak acids/based,especially -COOH, acetic acid, citric acid, ammonia (NH3)

Question 4

Which acids/bases are soluble in water (can be aqueous)?

Answer 4

NAAA: Nitrate (NO3), Alkali (Group 1), Ammonium (NH4), Acetate (C2H3O2)

Question 5

Which elements have known oxidation values?

Answer 5

F: -1
Al: +3
H: 1 (-1 in hydride)
O: -2 (-1 in peroxide)
Group 1: +1, Group 2: +2

Question 6

Which types of reactions are always redox?

Answer 6

Single Replacement & Combustion
(SRC)

Question 7

What types of reactions may or may not be redox?

Answer 7

Synthesis & Decomposition
(SD)

Question 8

What type of reaction is always not redox?

Answer 8

Double Replacement (acid/base, precipitate)