Labeling Chemical Equations
H2 + O2 --> H2O
H2O
Write the unbalanced chemical equation.
N2 + H2 --> NH3
Ba + S8 --> BaS
8 Ba + S8 --> 8 BaS
Heating silicon dioxide with carbon at high temperatures produces pure silicon and carbon dioxide gas.
Write the full balanced chemical equation:
1 SiO2 + 1 C --> 1 Si + 1 CO2
What are the reactant(s) for the unbalanced equation:
HCl + NaOH --> NaCl + H2O
HCl and NaOH
When pure hydrogen gas is ignited with oxygen gas, water vapor is formed.
Write the unbalanced chemical equation with state symbols.
H2(g) + O2(g) --> H2O(g)
Balance the following chemical equation:
H2O2 --> H2O + O2
2 H2O2 --> 2 H2O + O2
Calcium oxide absorbs and reacts with water vapor to form calcium hydroxide.
Write the balanced chemical equation:
1 CaO + 1 H2O --> 1 Ca(OH)2
When calcium metal is added to water, calcium oxide and hydrogen gas are produced.
List the reactants:
Calcium metal and water
Ca + H2O
Propane gas (C3H8) burns in oxygen gas, producing carbon dioxide gas, and water vapor.
Write the unbalanced chemical equation with state symbols.
C3H8(g) + O2(g) --> CO2(g) + H2O(g)
Balancing the following chemical equation:
KBr + H3PO4 --> K3PO4 + HBr
3 KBr + H3PO4 --> K3PO4 + 3 HBr
Solid ammonium carbonate is used as the active ingredient in smelling salts. When solid ammonium carbonate is heated, it decomposes into ammonia gas (NH3), carbon dioxide gas, and water vapor.
Write the full balanced chemical equation:
(NH4)2CO3 --> 2 NH3 + CO2 + H2O
Solid ammonium carbonate is used as the active ingredient in smelling salts. When solid ammonium carbonate is heated, it decomposes into ammonia gas (NH3), carbon dioxide gas, and water vapor.
List the formulas of all reactants and products.
(NH4)2CO3, NH3, CO2, H2O
When solutions of ammonium chloride and sodium hydroxide are heated, the products are ammonia gas (NH3), water vapor, and sodium chloride crystals.
Write the unbalanced chemical equation with state symbols.
NH4Cl(aq) + NaOH(aq) --> NH3(g) + H2O(g) + NaCl(s)
Balancing the following chemical equation:
Fe2O3 + HNO3 --> Fe(NO3)3 + H2O
Fe2O2 + 6 HNO3 --> 2 Fe(NO3)3 + 3 H2O
Phosphorus pentachloride when combined with water produces phosphoric acid (H3PO4) and hydrochloric acid.
Write the full balanced chemical equation:
PCl5 + 4 H2O --> H3PO4 + 5 HCl
Phosphorus trichloride is used in the manufacture of certain pesticides and may be synthesized directly from its elements.
List the formulas of all reactants and products of this reaction. Also label each as a reactant or product.
PCl3 = product
P + Cl2 = reactants
If enough electric current is passed into a solution of potassium iodide in water, a reaction takes place in which elemental hydrogen gas and solid elemental iodine are produced, leaving a solution of potassium hydroxide.
Write the unbalanced chemical equation for this process with state symbols.
KI(aq) + H2O(l) --> H2(g) + I2(s) + KOH(aq)
Here's a doozy! This question is open to everyone.
Balance the following chemical equation:
C2H5 + O2 --> CO2 + H2O
4 C2H5 + 13 O2 --> 8 CO2 + 10 H2O
Sucrose (C12H22O11) can be burned in the presence of oxygen to form carbon dioxide and water vapor.
Write the full balanced chemical equation:
C12H22O11 + 12 O2 --> 12 CO2 + 11 H2O