Riverside City College Chemistry Writing and Balancing Chemical Equations Exercises writing ionic equations : 1. Classify each of the compounds as a mole
Riverside City College Chemistry Writing and Balancing Chemical Equations Exercises writing ionic equations :
1.
Classify each of the compounds as a molecule or a salt.
Molecule Salt
Answer bank :
CaS, NO2, C2H5OH,KI,C6H6,CaSO4
2.
Classify each of the ions as a cation or an anion.
Cations Anions
Answer bank : NO-/2, K+, Co3+,NH+4, Br-, OH-,SA2+,CO-/3, Ca2+, O2-
3.
Classify each of the ions as monoatomic or polyatomic.
Monoatomic ions Polyatomic ions
Answer bank : NO-2, OH-,Cu+, Be2+,S2-, H3O+, Sn2+, Na+,F-,O2/2-, CIO-/3
4.
Balance the equations by inserting coefficients as needed.
equation 1:
PCl3+Cl2?PCl5
equation 2:
Mg3N2+HCl?MgCl2+NH3
5.
Balance each equation by inserting coefficients as needed.
equation 1:
KHF2?KF+H2+F2
equation 2:
P4O10+H2O?H3PO4
6.
Balance the chemical equation by adding coefficients as needed.
equation:
NaOH(aq)+NaNO2(aq)+Al(s)+H2O(l)?NH3(aq)+NaAlO2(aq)
7.
Write the formula for an ionic compound formed from the K+ ion and each additional ion.
K+ and Cl? :
K+ and N3? :
K+ and S2? :
8.
Write the formula for an ionic compound formed from O2? with each of the ions.
magnesium ion:
sodium ion:
aluminum ion:
9.
Predict the formula for a compound made from X2+ and Y2?.
Insert subscripts as needed.
formula:
XY
10.
Give the formula for an ionic compound formed from each pair of ions.
Na+ and O2?
Al3+ and F?
Mg2+ and S2?
Ca2+ and P3?
11.
Determine the formula unit for the compound formed when each pairs of ions interact.
Li+ and O2?:
Mg2+ and S2?:
Al3+ and Cl?:
Na+ and N3?:
12.
Write the chemical formula for the compound formed by each pair of positive and negative ions.
Ba2+ and NO3?:
Al3+ and CO32?:
K+ and PO43?:
13.
Write the net ionic equation, including phases, that corresponds to the reaction
Zn(NO3)2(aq)+Na2S(aq)?ZnS(s)+2NaNO3(aq)
net ionic equation:
14.
Enter the net ionic equation, including phases, for the reaction of AgNO3(aq) and KCl(aq). Refer to the solubility rules as needed.
net ionic equation:
15.
Write the balanced net ionic equation for the reactions that occur when the given aqueous solutions are mixed. Include the physical states.
A. copper(II) sulfate, CuSO4, and potassium hydroxide, KOH
net ionic equation:
B. lithium carbonate, Li2CO3, and aluminum nitrate, Al(NO3)3
net ionic equation:
C. sodium phosphate, Na3PO4, and barium chloride, BaCl2
net ionic equation:
17.
Complete and balance the molecular equation for the reaction of aqueous iron(III) nitrate, Fe(NO3)3, and aqueous lithium hydroxide, LiOH. Include physical states.
molecular equation:
Fe(NO3)3(aq)+LiOH(aq)?
Enter the balanced net ionic equation for the reaction. Include physical states.
net ionic equation:
18.
Complete and balance the molecular equation for the reaction of aqueous sodium sulfate, Na2SO4, and aqueous barium nitrate, Ba(NO3)2. Include physical states.
molecular equation:
Na2SO4(aq)+Ba(NO3)2(aq)?
Enter the balanced net ionic equation for this reaction. Include physical states.
net ionic equation:
19.
Complete and balance the molecular equation for the reaction of aqueous sodium carbonate, Na2CO3, and aqueous nickel(II) chloride, NiCl2. Include physical states.
molecular equation:
Na2CO3(aq)+NiCl2(aq)?
Enter the balanced net ionic equation for this reaction. Include physical states.
net ionic equation:
20.
At temperatures above roughly 800 °C, calcium carbonate decomposes.
Write and balance the equation for this reaction. Phase symbols are optional.
21.
For the chemical reaction
2HBr(aq)+Ba(OH)2(aq)?2H2O(l)+BaBr2(aq)
write the net ionic equation, including the phases.
net ionic equation:
22.
Write the net ionic equation for the chemical reaction shown. Include physical states.
HClO2(aq)+NaOH(aq)?H2O(l)+NaClO2(aq)
net ionic equation:
23.
For the chemical reaction
HClO4(aq)+NaOH(aq)?H2O(l)+NaClO4(aq)
write the net ionic equation, including the phases.
net ionic equation:
Which ions are considered spectator ions for this reaction?
H+ClO?4Na+OH?
24.
Complete and balance the equation for this single-displacement reaction. Phases are optional.
equation:
AgNO3+Al?
25.
Complete and balance the equation for the single-displacement reaction. Phases are optional.
equation:
Li+NaOH?
26.
Consider the decomposition reaction
? ?CaO(s)+CO2(g)
