Gen. Chemistry 101- Balancing Equations
How many oxygen atoms are located on the reactant side of the following chemical equation? 2 Al(s) + Fe₂O₃(s) → Al₂O₃(s) + 2 Fe(l)
3 2 Al(s) + Fe₂O₃(s) → Al₂O₃(s) + 2 Fe(l) Oxygen can be found in iron(III) oxide, Fe₂O₃. Every molecule of Fe₂O₃ contains 2 Fe atoms and 3 oxygen atoms.
What numbers belong in the blank spaces to fully balance the following reaction? __Fe (s) + __Cl₂ (g) → __FeCl₃ (s)
2 , 3 , 2 Matter is conserved in a chemical reaction. Balanced equations contain the same number of atoms of each element on each side of the equation. A coefficient of 2 in front of Fe, a coefficient of 3 in front of Cl₂, and a coefficient of 2 in front of FeCl₃ yield the same number of Fe and Cl atoms on both sides of the equation.
Write the balanced equation for the reaction of solid potassium chlorate decomposing to form solid potassium chloride and oxygen gas.
2 KClO₃ (s) → 2 KCl (s) + 3 O₂ (g) Matter is conserved in a chemical reaction. Balanced equations contain the same number of atoms of each element on each side of the equation. For example, in this chemical equation 2 KClO₃ (s) → 2 KCl (s) + 3 O₂ (g), there are 2 K atoms, 2 Cl atoms, and 6 O atoms on the reactant side. There are 2 K atoms, 2 Cl atoms, and 6 O atoms on the product side. These numbers are equal on both sides.
Which one of the following represents the net ionic equation for the reaction of Ca(NO₃)₂ with Li₃PO₄?
3 Ca²⁺ (aq) + 2 PO₄³⁻ (aq) → Ca₃(PO₄)₂ (s) Net ionic equations only account for the ions that are involved in the reaction. Calcium phosphate is insoluble in water and will be a precipitate. Lithium and nitrate ions are spectator ions in this reaction and are not included in the net ionic equation.
When butanol (C₄H₉OH) is burned in oxygen, CO₂ and H₂O are the products. What is the coefficient in front of the O₂ in the balanced equation (using only whole numbers and the lowest whole number ratio)?
6 Matter is conserved in a chemical reaction. Balanced equations contain the same number of atoms of each element on each side of the equation. The balanced equation for this reaction is: C₄H₉OH + 6 O₂ → 4 CO₂ + 5 H₂O.
Balance the following chemical reaction: Al₂(SO₄)₃ (aq) + K₃PO₄ (aq) → AlPO₄ (s) + K₂SO₄ (aq) A) Al₂(SO₄)₃ (aq) + 2 K₃PO₄ (aq) → 2 AlPO₄ (s) + 3 K₂SO₄ (aq) B) 2 Al₂(SO₄)₃ (aq) + 6 K₃PO₄ (aq) → 3 AlPO₄ (s) + 6 K₂SO₄ (aq) C) 2 Al₂(SO₄)₃ (aq) + 4 K₃PO₄ (aq) → 4 AlPO₄ (s) + 6 K₂SO₄ (aq) D) AlSO₄ (aq) + KPO₄ (aq) → AlPO₄ (s) + KSO₄ (aq)
A) Al₂(SO₄)₃ (aq) + 2 K₃PO₄ (aq) → 2 AlPO₄ (s) + 3 K₂SO₄ (aq) Matter is conserved in a chemical reaction. Balanced equations contain the same number of atoms of each element on each side of the equation. For example, in this chemical equation: Al₂(SO₄)₃ (aq) + 2 K₃PO₄ (aq) → 2 AlPO₄ (s) + 3 K₂SO₄ (aq), there are 2 Al atoms, 3 S atoms, 20 O atoms, 6 K atoms, and 2 P atoms on the reactant side. There are 2 Al atoms, 2 P atoms, 20 O atoms, 3 S atoms, and 6 K atoms on the product side. These numbers are equal on both sides.
Predict the products and balance the following reaction: Ag₂SO₄(aq) + NaCl(aq) →
Ag₂SO₄(aq) + 2NaCl(aq) → Na₂SO₄(aq) + 2AgCl(s) AgCl is insoluble in water and will be in the form of a precipitate.
Give the balanced equation for solid iron(III) sulfide reacting with gaseous hydrogen chloride to form solid iron(III) chloride and hydrogen sulfide gas.
Fe₂S₃ (s) + 6 HCl (g) → 2 FeCl₃ (s) + 3 H₂S (g)
An aqueous solution of Mg(NO₃)₂ and NaOH generates the solid precipitate Mg(OH)₂. Which of the following would NOT appear in the corresponding net ionic reaction?
NO₃⁻ Nitrate does not appear in the net ionic reaction because it is a spectator ion
Consider the following reaction: C₆H₁₄ + 19/2O₂ → 7H₂O + 6CO₂. Here, C₆H₁₄ is a(n):
Reactant and Hydrocarbon C₆H₁₄ is a reactant in this reaction and is also a hydrocarbon.
