Students were enquired to answer a question at school and to declare what is most important for them to succeed. The one which response stood out from the rest was practice. Persons who generally are successful do not become successful by being born. They work hard and perseverance their lives to succeeding. If you wish to get your goals, keep this in mind! the following are one of the answer and question example that you possibly will utilize to practice and further enhance your practical knowledge and also give you insights that could help you to sustain your study in school.
Question:
Which balanced equation represents a redox reaction? 1. Mg + Cl2 → MgCl2 2. CaO + H2O → Ca(OH)2 3. HNO3 + NaOH → NaNO3 + H2O 4. NaCl + AgNO3 → AgCl + NaNO3
Answer:
Among the given reactions, only Mg + Cl₂ → MgCl₂ balanced equation represents a redox reaction.
What is redox reaction?
Those reaction in which oxidation and reduction takes place simultaneously or oxidation number changes is known as redox reaction.
(1). Mg + Cl₂ → MgCl₂
In this reaction oxidation state of Mg and Cl is changes from 0 to +2 and 0 to -1 respectively, so this reaction is the redox reaction.
In the second, third and fourth reaction no change in oxidation state of any element observed, so they are not showing redox reaction.
Hence, option (1) is correct i.e. Mg + Cl₂ → MgCl₂ represents redox reaction.
To learn more about redox reaction, visit the below link:
From the answer and question examples above, hopefully, they could simply help the student resolve the question they had been looking for and observe of all stated in the answer above. Then may make some sharing in a group discussion and also learning with the classmate around the topic, so another student also attain some enlightenment and still keeps up the school learning.