Solutions
What is the unit of molarity?
mol./L or M
What is the formula we use in dilution problems?
M1V1 = M2V2
What are spectator ions?
Ions that do not take part in the reaction.
What is the molecular equation for aqueous sodium phosphate reacting with aqueous calcium chloride to form calcium phosphate and sodium chloride?
2Na3PO4 (aq) + 3CaCl2 (aq) → Ca3(PO4)2 (s) + 6NaCl (aq)
A compound that contains a hydrogen is usually _____.
an acid
What is the formula of molarity?
The moles of solute divided by the volume of solution.
What is the new concentration if you dilute 175 mL of a 1.6 M solution of LiCl to 1.0 L?
0.28 M
What is a total ionic equation?
An equation that lists all the dissociated ions in the reaction.
Name a situation when a compound containing a sulfide ion is soluble.
When there is a cation from Group 1A, Group 2A, or ammonium.
Name two strong acids.
Any two from: sulfuric acid, hydrochloric acid, hydrobromic acid, hydroiodic acid, perchloric acid, nitric acid
What is the concentration of 0.5 moles of NaOH dissolved in 50 mL of water?
10 M
What is the volume of water that must be added to 160 mL of a 5.0 M copper(II) sulfate solution to achieve a 0.30 M copper(II) sulfate solution?
2507 mL
What is the molecular equation of solid nickel reacting with aqueous lead(II) nitrate to form solid lead (and nickel(II) nitrate)?
Ni (s) + Pb(NO3)2 (aq) → Pb (s) + Ni(NO3)2 (aq)
What is the precipitate that forms when sulfuric acid reacts with calcium hydroxide?
Calcium sulfate
Name a weak base.
ammonia (NH3)
What is the amount of NaBr (molar mass = 102.9 g/mol.) that would be needed to prepare 700 mL of 0.230 M NaBr solution?
16.6 g
What is the volume you should dilute 133 mL of a 7.90 M CuCl2 solution so that 51.5 mL of the diluted solution contains 4.49 g CuCl2?
1620 mL (1.62 L)
What is the total ionic equation of solid nickel reacting with aqueous lead(II) nitrate to form solid lead (and nickel(II) nitrate)?
Ni (s) + Pb2+ (aq) + 2NO3- (aq) → Pb (s) + Ni2+ (aq) + 2NO3- (aq)
What is the precipitate that forms when ammonium hydroxide reacts with hydrochloric acid?
No precipitate
What is the net ionic equation for all strong acid/strong base reactions?
H+ (aq) + OH- (aq) → H2O (l)
What is the concentration of 200 mL of H3PO4 that is required to make 0.4 moles of Ca3(PO4)2 based on the following reaction?
2H3PO4 (aq) + 3Ca(OH)2 (aq) → Ca3(PO4)2 (s) + H2O (l)
4 M
A 40.0 mL volume of 1.80 M Fe(NO3)3 is mixed with 21.5 mL of 0.808M Fe(NO3)3 solution. Calculate the molar concentration of the final solution.
1.45 M
What is the net ionic equation of solid nickel reacting with aqueous lead(II) nitrate to form solid lead (and nickel(II) nitrate)?
Ni (s) + Pb2+ (aq) → Pb (s) + Ni2+ (aq)
Write the molecular, total ionic, and net ionic equations for the following reaction:
Ca(OH)2 (aq) + CH3COOH (aq) →
Molecular: Ca(OH)2 (aq) + 2CH3COOH (aq) → Ca(CH3COO)2 (aq) + 2H2O (l)
Total ionic: Ca2+(aq) + 2OH-(aq) + 2CH3COO-(aq) + 2H+(aq) → Ca2+(aq) + 2CH3COO-(aq) + 2H2O (l)
Net ionic: 2OH-(aq) + 2H+(aq) → 2H2O (l)
What is the point during a titration at which the moles of H3O+ = moles of OH- called?
equivalence point