Question

NAME SECTION DATE EXERCISE 8 INSTRUCTOR Equation Writing and Balancing III For each of the following situations, write and balance the formula equation for the reaction that occurs. 1. A strip of zinc is dropped into a test tube of hydrochloric acid. 2. Hydrogen peroxide decomposes in the presence of manganese dioxide. 3. Copper II) sulfate pentahydrate is heated to drive off the water of hydration 4. A piece of sodium is dropped into a beaker of water. 5. A piece of limestone (calcium carbonate) is heated in a Bunsen burner flame. 6. A piece of zinc is dropped into a solution of silver nitrate. 7. Hydrochloric acid is added to a sodium carbonate solution. 8. Potassium chlorate is heated in the presence of manganese dioxide. 9. Hydrogen gas is burned in air. 10. Sulfuric acid solution is reacted with sodium hydroxide solution. - 421 - 444

Answer 1

Znis)+2Mcl (ag) Znclo lag)t Hala) Mno(s t o21a)+ Hol) Cy So4.50 19) Heat Cu SPy (s)t 5 Haol) Na ts) + ot Nao1a) la) Cacoz (s) Cao(s) + Co la 2nls)+ 2A Nola) 2nlNo) 10a)+2Agls Naci laa)t Hgt) Pzoli)t layla) Na2 cor laa)t2ncl laa) 2 KC0215 Mnb ) kclts)+ 409(a) (afalyst 2H0 11) heat