3. Chemical Reactions

Balancing Chemical Equations

Open Question
When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H₂, is produced with the formation of an aluminum chloride, AlCl₃, solution. Write the balanced chemical equation showing the phases of reactants and products.
Open Question
Write a balanced chemical equation based on the following description:
nitrogen gas and oxygen gas react to produce nitrogen monoxide gas
Open Question
The figure (figure 1) shows the reaction of element a (lavender spheres) with element b (tan spheres). write the balanced chemical equation for this reaction in terms of a and b.
Open Question
What is the coefficient in front of the no when the equation below is balanced? NH₃(g) + O₂(g) → NO(g) + H₂O(g)
Open Question
Write a balanced chemical equation based on the following description:
propanol, C₃H₇OH(l) burns in air to produce gaseous carbon dioxide and water vapor
Open Question
Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor.
Open Question
Solid iron(iii) oxide reacts with hydrogen gas to form solid iron and liquid water.
Open Question
When iron rusts, solid iron reacts with gaseous oxygen to form solid iron(iii) oxide.
Open Question
When the following equation is balanced the coefficients are
Open Question
Liquid octane reacts with oxygen gas to form carbon dioxide gas and water vapor.
Open Question
Gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (ch4) and liquid water.
Open Question
Solid aluminum sulfide reacts with water to form solid aluminum hydroxide and gaseous hydrogen sulfide.
Open Question
How many moles of o2 are in the chemical equation when balanced using the lowest whole numbers?
Open Question
The scientific principle which is the basis for balancing chemical equations is
Open Question
Na₂SO₃ represents sodium sulfite. What does the 4 mean in the formula 4 Na₂SO₃?