Homework Help: CHEM

Posted by Chris on Friday, October 15, 2010 at 7:38pm.

Could you please tell me if these are right? Write an equation for the following reactions. Write the correct formulas of the reactants and products. Then correctly balance each equation.

A.) Potassium and oxygen gas react to form potassium oxide.
I got K+O2=KO2

B.) Sodium and water react to form sodium hydroxide and hydrogen gas.
I got Na+H2O=NaOH+H2
2Na(s)+2H2O(l) = 2NaOH(aq)+H2(g)

C.) Iron and oxygen gas react to form iron (III) oxide.
I got 4Fe+3O2=2Fe2O3

CHEM - DrBob222, Friday, October 15, 2010 at 9:10pm
B and C are correct. A is not correct for the way the question is worded.
K + O2 ==> K2O
2K + O2 ==> K2O

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