Convert the following word equations to balanced chemical equations
mentioning the states of the reactants and products and identify the
type of reaction - (Each question carries 2marks each)
1. Glucose + Oxygen
2. Barium chloride + Aluminium Sulphate
3. Sodium hydroxide + Sulphuric acid
4. Magnesium oxide + Water
5. Zinc + Hydrochloric acid
6. Silver chloride
7. Lead nitrate
Sunlight
8. Zinc + Copper sulphate
9. Zinc oxide + Carbon
10. Methane + Oxygen
Answer plz... it's quite urgent
Answers
Answer:
1. Glucose and oxygen react together in cells to produce carbon dioxide and water and releases energy. The reaction is called aerobic respiration because oxygen from the air is needed for it to work.
2. When barium chloride reacts with aluminum sulphate it gives aluminum chloride and barium sulphate as a product. Barium sulphate is represented as BaSO4 barium has oxidation state and sulphate has oxidation state. Therefore 1 barium combines with 1 Sulphur.
3.What happens when sodium hydroxide reacts with sulphuric acid? When sodium hydroxide react with sulphuric acid they form Sodium sulphate and water. The reactants involved in the process are sodium hydroxide and sulfuric acid. The reactants is base and an acid, which leads to neutralization process and yields a salt .
4.The MgO/H2O reaction mechanism is relatively simple. MgO and H2O firstly forms MgO (H2O). ... The reaction energy barrier of intermediate MgO (OH) is 15.05kcal/mol (62.90kJ/mol). In comparison to the two reactions, the barrier of MgO/H2O reaction is lower, and it is concluded that Magnesium Oxide reacts with water first.
5.Metals with dilute acid
When zinc reacts with hydrochloric acid it produces zinc chloride and hydrogen gas. We can measure the rate of the reaction by measuring how fast the reaction produces hydrogen.
6.Silver chloride is a chemical compound with the chemical formula AgCl. This white crystalline solid is well known for its low solubility in water. Upon illumination or heating, silver chloride converts to silver, which is signaled by grey to black or purplish coloration to some samples.
8.On adding zinc to copper sulphate solution, zinc displaces copper from copper sulphate and forms zinc sulphate solution. ... Hence zinc can displace copper from copper sulphate. Thus zinc sulphate is obtained and copper gets deposited, hence the blue colour of CuSO4 disappears.
9.ZnO(s)+C(s)=Zn(g)+CO(g). CO2(g)+C(s)=2CO(g). The reduction mechanism can be described as follows: (i) carbon monoxide is produced by Boudouard reactions (reaction (5.3)); (ii) the ZnO is reduced by carbon monoxide to zinc vapour (reaction (5.2)) and (iii) carbon dioxide takes part in the reaction (5.3) again.
10.1 molecule of methane in an interaction with 2 molecules of oxygen forms 1 molecule of carbon dioxide and 2 molecules of water. In the reaction process heat energy is released equivalent to 891 kJ.
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