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Riverside City College Chemistry Writing and Balancing Chemical Equations Exercises

Riverside City College Chemistry Writing and Balancing Chemical Equations Exercises

Question Description

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+Cl2PCl5

equation 2:

Mg3N2+HClMgCl2+NH3


5.


Balance each equation by inserting coefficients as needed.

equation 1:

KHF2KF+H2+F2

equation 2:

P4O10+H2OH3PO4


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(NO

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