7. What information does a balanced equation come?
8. What is the partial equation method of balancing chemical equations?6
9. On heating a blue coloured powder of copper nitrate in a boing tube copper oxide black.oneen as anda
gas) are formed
(ə) Write the balanced9 chemical equation of the reaction
(b) Identify the gas X
Ich What is the type of the reaction?
Answers
Answer:
1. In addition to providing qualitative information about the identities and physical states of the reactants and products, a balanced chemical equation provides quantitative information. Specifically, it tells the relative amounts of reactants and products consumed or produced in a reaction.
2.In the partial equation method, the overall reaction is assumed to take place through two or more simpler equation. Each such equation can be described by a simple chemical equation. Such simple chemical equations are called Partial Equations. Each equation is then balanced by hit-and-trial method.
3.Copper(ll) nitrate decomposes on heating to form copper oxide, oxygen gas and brown coloured nitrogen dioxide (NO2) gas. Latter is an oxide of a non-metal (nitrogen), therefore it combines with water to form an acidic solution whose pH is less than 7
balance d .chemical equation: A chemical equation in which the number of each type of atom is equal on the two sides of the equation. Subscripts: Part of the chemical formulas of the reactants and products that indicate the number of atoms of the preceding element.
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