Podcast
Questions and Answers
Why is it important for a chemical equation to be balanced?
Why is it important for a chemical equation to be balanced?
- To speed up the reaction
- To follow the law of conservation of mass (correct)
- To increase the yield of products
- To ensure the products are formed correctly
What does a balanced chemical equation ensure about the number of atoms of each element?
What does a balanced chemical equation ensure about the number of atoms of each element?
- They decrease in the products
- They increase in the products
- They remain the same before and after the reaction (correct)
- They are only balanced in certain reactions
What does a double displacement reaction involve?
What does a double displacement reaction involve?
- Release of energy in the form of light
- Exchange of ions between reactants to form new products (correct)
- Transfer of electrons between reactants
- Formation of a precipitate in the reaction mixture
In a chemical equation, what does oxidation refer to?
In a chemical equation, what does oxidation refer to?
In a double displacement reaction, how do the atoms get rearranged?
In a double displacement reaction, how do the atoms get rearranged?
What type of reaction takes place when barium chloride and sodium sulphate solutions are mixed?
What type of reaction takes place when barium chloride and sodium sulphate solutions are mixed?
What is the product formed when sodium hydroxide solution reacts with hydrochloric acid solution?
What is the product formed when sodium hydroxide solution reacts with hydrochloric acid solution?
Why is it important to balance chemical equations?
Why is it important to balance chemical equations?
When balancing a chemical equation, why are physical states like (s), (l), (g), and (aq) mentioned?
When balancing a chemical equation, why are physical states like (s), (l), (g), and (aq) mentioned?
In the balanced equation 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g), why is (g) used with H2O?
In the balanced equation 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g), why is (g) used with H2O?
Why are reaction conditions like temperature, pressure, catalyst, etc., sometimes indicated in a chemical equation?
Why are reaction conditions like temperature, pressure, catalyst, etc., sometimes indicated in a chemical equation?
Why is it mentioned that physical states are usually not included in a chemical equation unless necessary?
Why is it mentioned that physical states are usually not included in a chemical equation unless necessary?
