Advertisements
Advertisements
प्रश्न
What is meant by the metal reactivity series ? State its importance, (any two points).
Advertisements
उत्तर
A list in which the metals are arranged in the decreasing order of their chemical reactivity is called the metal reactivity series.
Special features of the activity series:
- The ease with which a metal in solution loses electron(s) and forms a positive ion decreases down the series, i.e. from potassium to gold.
- Hydrogen is included in the activity series because, like metals do, it too loses an electron and becomes positively charged (H+) in most chemical reactions.
- The series facilitates the comparative study of metals in terms of the degree of their reactivity.
- The compounds of the metals (oxides, carbonates, nitrates and hydroxides) too can be easily compared.
APPEARS IN
संबंधित प्रश्न
What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?
What do you observe when silver nitrate is added to a solution of sodium chloride?
What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.
How will you obtain Zinc chloride from zinc.
Also give balanced equations for the reactions
Write chemical equation for the event.
Iron filings are dropped in aqueous solution of copper sulphate.
Write chemical equation for the event.
Electrolysis of alumina is done.
With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.
Complete the statement by filling in the blank with the correct word:
The metal which reacts with steam and the reaction is reversible is ________.
A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.
A solution of CuSO4 was kept in an iron pot. After few days the iron pot was found to have a number of holes in it. Explain the reason in terms of reactivity. Write the equation of the reaction involved.
