Translate each of the following chemical reactions and write as a balanced chemi

Question

Translate each of the following chemical reactions and write as a balanced chemical equation. Use a periodic table and a polyatomic ion list as references. Be sure to include phase labels on all reactants and products. Sodium metal can be obtained by heating solid sodium carbonate with carbon. Carbon monoxide is produced as an additional product. When aqueous solutions of sodium hydroxide and lead (II) nitrate are mixed, a precipitate (solid) of lead (II) hydroxide forms. Assume a double displacement reaction to find the other product formula, which remains dissolved. Heptane, C_7H_16, is a likely component of gasoline. Like any hydrocarbon, heptane bums with oxygen and produces carbon dioxide and water. (When writing phase labels, think about these questions. Is water present in gasoline? When burning something, large amounts of heat are produced - what happens to the states of the products?)

Explanation / Answer

1) the balanced equation for the formation of compound is

Na2CO3 (s) + 2 C (s) ------------------> 2 Na (s) + 3 CO (g)

2)  the balanced equation for the formation of precipitate is

2 NaOH (aq) + Pb(NO3)2 (aq) ----------------> 2 NaNO3 (aq) + Pb(OH)2 (s)

3)   the balanced equation for the formation of combustion is

C7H16 (l) + 11 O2 (g) -------------------> 7 CO2 (g) + 8 H2O (g)

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