CH4 Chemical RXN's & Aqueous solution Flashcards
Strong electrolytes
mostly 100% ionized
Sulfurous acid
H2SO3
Nitrous Acid
HNO2
Nitric Acid
HNO3
Sulphuric Acid
H2SO4
Phosphoric Acid
H3PO4
Weak electrolytes
mixture of ions and un-ionized molecules
Arrow in both directions
there is balance between forward and reverse RXN
- CHEMICAL EQUILIBRIUM
Precipitate
an insoluble solid formed by a reaction in solution
Exchange reactions
aka Double displacement
Ionic equations
highlight the reactions between ions
Molecular equations
list complete chemical form
Net ionic equation
list ions not common on both sides
Acids
(proton donors) ionize in aq solution form H+ ion
Bases
(proton acceptors) accept or react with H+ ions
Strong acids & bases
strong electrolytes, completely ionized in solution
Strong bases include…
Group A1 metal hydroxides
Strong acids include
HCl , HBr, Hl, HCLO4, H2SO4, HNO3
Weak acids/ bases
partially ionized in aq. solution
Neutralization RXN’s
Acids & bases react to form a salt + water
Ex. Neutralization rxn.
Mg(OH)2 + 2HCl = MgCl2 + 2H20
Net ionic equation of
Mg(OH)2 + 2HCl = MgCl2 + 2H20
Mg(OH)2 + 2H = Mg2+ + 2H20
Neutralization reaction w/ gas formation
sulfides (rather than OH-) react with acids to form gas
ex. of sulfide gas formation
Na2S (aq) + 2HCl(aq) = H2S(g) + 2NaCl(aq)
Net Ionic equation for :
Na2S (aq) + 2HCl(aq) = H2S(g) + 2NaCl(aq)
S2- + 2H+ = H2S(g)
Carbonates & hydrogen carbonates form ___ when reacting with an acid
CO2 gas
Sodium Bicarbonate Molecular formula
NaHco3 (baking soda)
sodium bicarb + Hcl
NaHCO3(s) + HCl(aq) = NaCl(aq) + H2CO3 (aq) ——> H2Ol +CO2(g) + NaCl(aq)
Oxidation- Reduction RXN’s
transfer of e- between reactants
OIL RIG
Oxidation is Loss (of e-)
Reduction is Gain
