Reactants and products are represented in their stable forms, under the conditions of the reaction. Rewrite or modify the following chemical equations so that the reactants and products are in their stable form at room temperature and atmospheric pressure.
a) 2 KClO3 (s) -> 2 KCl (s) + 6 O (g)
0VV1JcqyBrI=
b) 4 H (g) + 2 O (g) -> 2 H2O (l)
0VV1JcqyBrI=
c) 4 NH3 (l) + 6 O(g) -> 4 N(g) + 6 H¬2O (l)
0VV1JcqyBrI=
Balance the following chemical equations.
a) XvVM00l89Is=Ag2O (s) -> h4XZagboIgc=Ag(s) + 0VV1JcqyBrI=O2 (g)
b) 0VV1JcqyBrI=K2CrO4 (aq) + 0VV1JcqyBrI=Ba(NO3)2 (aq) -> 0VV1JcqyBrI=BaCrO4 (s) + XvVM00l89Is=KNO3 (aq)
c) H2SO4 (aq) + NaOH -> Na2SO4 (aq) + H2O (l)
d) H3PO4 (aq) + CaO (s) -> Ca3(PO4)2 (s) + H2O (l)
e) NO2 (g) + NH3 (l) -> N2 (g) + H2O (l)
f) PCl5 (l) + H2O (l) -> H3PO4 (aq) + HCl (g)
Balance the following chemical equations.
a) C2H6 (g) + O2 (g) à CO2 (g) + H2O (g)
b) C2H5OH (l) + O2 (g) à CO2 (g) + H2O (g)
c) Mg(OH)2 (s) + HCl (aq) à H2O (l) + MgCl2 (aq)
d) Cr (s) + S8 (s) à Cr2S3 (s)
e) Fe2O3 (s) + HNO3 (aq) à Fe(NO3)3 (aq) + H2O (l)
f) MoS2 (s) + O2 (g) à MoO3(s) + SO2 (g)
g) P4 (s) + F2 (g) à PF3 (g)
Elemental copper reacts with molecular oxygen to form copper (II) oxide. This reaction can be seen on copper pipes and pennies.
a) Write the balanced chemical equation for this reaction.
b) If 2 moles of copper on the surface of a pipe that are exposed to oxygen, how many moles of copper oxide will be formed?
c) How many grams copper (II) oxide will be formed?
d) Copper (II) oxide will form elemental copper and water when exposed to hydrogen gas. Write the balanced chemical equation for this reaction.
e) What mass of hydrogen gas is needed to react with copper oxide formed in part (c)? What mass of copper will be formed?