Can anyone please answer these questions. Please
Answers
Answer:
1⃣ : Silver bromide is a light-sensitive compound that is it gets decomposed when exposed to light. So when silver bromide is exposed to sunlight, it gets decomposed to give silver metal and bromine gas is liberated. The reaction is called a photolysis reaction.
2⃣ : 1) The balanced chemical equation is
The balanced chemical equation isMnO2 + 4 HCl → MnCl2 + 2H2O + Cl 2
2) The balanced chemical equation is
2NaOH+H2SO4→Na2SO4+2H2O.
3⃣ : 1) when calcium carbonate reacts with sulphuric acid, it forms water, carbon dioxide and calcium sulphate. The reaction between sulfuric acid and calcium carbonate is somewhat similar to the reaction with sodium bicarbonate way - carbon dioxide bubbles out, and the salt is left behind is calcium sulfate.
2) Dilute Hydrochloric acid is added to Lead nitrate Solution and the mixture is heated. When dil. HCl is added to lead nitrate solution and heated, it forms a white precipitate of lead chloride.
3) The chemical reaction between quicklime and water to form slaked lime(Ca(OH)2) is characterized by a change in temperature. There is a rise in temperature as it is an exothermic reaction.
4⃣ 1) Displacement reaction : Displacement reactions occur when a metal from the electrochemical series is mixed with the ions of a metal lower down in the electrochemical series. The atoms of the more reactive metal push their electrons on to ions of the less reactive metal.
2)Reduction reaction : Reduction is a chemical reaction that involves the gaining of electrons by one of the atoms involved in the reaction between two chemicals.
3)Combination reaction :A reaction in which two or more reactants combine to form a single product is known as a combination reaction
Hope this helps you....