net ionic equations

What is a net ionic equation?

• A net ionic equation shows all ions present in a solution.

• A net ionic equation shows only the species that participate in a chemical reaction, omitting the spectator ions.

• A net ionic equation is a type of chemical equation that includes all reactants and products.

• A net ionic equation is used to balance chemical equations without considering the charges.

What is a synthesis reaction?

• A reaction where a single reactant breaks down into two or more products.

• A type of reaction where two or more reactants combine to form a single product.

• A reaction that involves the exchange of ions between two compounds.

• A reaction that occurs only in the presence of a catalyst.

What is the general form of a double displacement reaction?

• AB + CD → AD + CB, where A and C are cations and B and D are anions.

• AB + CD → AC + BD, where A and B are cations and C and D are anions.

• AB + CD → AC + DB, where A and D are cations and B and C are anions.

• A + B → AB, where A and B are elements.

What is the role of spectator ions in a reaction?

• They participate actively in the chemical reaction.

• They are ions that do not participate in the actual chemical reaction and remain unchanged.

• They increase the rate of the reaction by providing additional energy.

• They are formed as products of the reaction.

What is the solubility of K₂CO₃?

• K₂CO₃ is soluble in water.

• K₂CO₃ is insoluble in water.

• K₂CO₃ is slightly soluble in water.

• K₂CO₃ is soluble in alcohol.

What is the net ionic equation for the reaction of AgNO₃ and CaCl₂?

• Ag⁺(aq) + Cl^-(aq) → AgCl(s)

• Ag⁺(aq) + Ca²⁺(aq) → AgCa(s)

• Ca²⁺(aq) + 2Cl^-(aq) → CaCl₂(s)

• Ag⁺(aq) + 2Cl^-(aq) → AgCl₂(s)

What is the formula for calculating the number of moles in a solution?

• Number of moles = mass (g) / molar mass (g/mol)

• Number of moles = volume (L) / molarity (mol/L)

• Number of moles = density (g/mL) x volume (mL)

• Number of moles = mass (g) x molar mass (g/mol)

What is the significance of balancing chemical equations?

• It allows for the creation of new elements.

• It ensures the law of conservation of mass is followed, meaning the number of atoms of each element is the same on both sides.

• It helps in predicting the products of a reaction.

• It simplifies the chemical reaction process.

What is the balanced equation for the reaction of iron and oxygen?

• 4Fe + 3O₂ → 2Fe₂O₃

• 2Fe + O₂ → Fe₂O₃

• 3Fe + 2O₂ → Fe₃O₄

• Fe + O₂ → FeO

Provide an example of a synthesis reaction.

• 2 Na + Cl₂ → 2 NaCl

• H₂ + O₂ → 2 H₂O

• C + O₂ → CO₂

• N₂ + 3 H₂ → 2 NH₃