Chemistry I-H
Reaction Prediction
Practice Sheet Solution Set
For the following equations (A) indicate the type of reaction (SYN, DEC, SR, or DR); (B) indicate whether the reaction will go as written; (C) if the reaction will not go as written, clearly indicate what is wrong with the equation (or what the products should be).
1. DR ammonium chloride, when reacted with sodium hydroxide, produces ammonia gas,
water and sodium chloride
YES
2. SR solid iodine, when added to a solution of cesium chloride, produces chlorine gas
and cesium iodide
NO Iodine is less active than chlorine.
3. DEC potassium nitrate, when heated, produces potassium oxide plus nitrogen dioxide gas
NO I-A nitrates only decompose into the nitrites - not the oxides.
Wrong products!
4. SR magnesium sulfide plus oxygen gas yields magnesium oxide plus sulfur
YES
5. DEC Ca(ClO3)2 D CaCl2 + 3O2
YES
6. DR 3 SrCO3 + 2 H3PO4 3 H2O + 3 CO2 + Sr3(PO4)2
YES
7. DR Mg(NO3)2 + KClO3 2 KNO3 + Mg(ClO3)2
NO No evidence of a reaction - everything is soluble!
-2-
8. SYN 2 P + 5 S P2S5
YES
9. DEC 2 HgO 2 Hg + O2
D.C.
YES
10. SR Cu + 2 H2SO4 CuSO4 + H2
NO Cu is less active than hydrogen.
11. SYN SrO + H2O H2SrO4
NO SrO is a basic anhydride - should produce Sr(OH)2.
Wrong products.
12. DEC BaCO3 Ba + CO2
NO Wrong products - should be BaO and CO2
13. SYN dinitrogen tetroxide gas is reacted water, yielding nitrous acid
YES
14. SYN CuO + SO3 CuSO4
YES
15. DR solutions of silver acetate and sodium chloride are mixed, producing
sodium acetate and silver chloride
YES
-3-
16. SR magnesium chloride plus lithium metal yields lithium chloride plus magnesium
YES
17. SR powdered sulfur, added to sodium fluoride yields sodium sulfide plus fluorine gas
NO Sulfur is less active than fluorine.
18. DR solutions of silver chloride and lead(II) carbonate are mixed, producing
silver carbonate and lead(II) chloride
NO Both reactants are insoluble, so ions cannot be exchanged.
Write the net ionic equation for the following reactions:
19. When solutions of sodium carbonate and hydrochloric acid are mixed, sodium chloride, carbon dioxide, and water are formed.
CO3-2 + 2H+1 à H2O + CO2(g)
20. When solutions of nickel(II) nitrate and sodium hydroxide are mixed, sodium nitrate and nickel (II) hydroxide are formed.
Ni+2(aq) + 2OH-1(aq) à Ni(OH)2(s)
21. What is the net ionic equation for the reaction between cupric sulfate and barium hydroxide?
Cu+2(aq) + SO4(aq)-2 + Ba+2(aq) + 2OH-1(aq) à Cu(OH)2(s) + BaSO4(s)
22. Predict whether or not chlorine gas will react with magnesium sulfide.
Yes, since chlorine is about as active as oxygen, and oxygen would replace sulfur.