Reactivity Towards Thermal Decomposition of Metal Compounds

Q. Question 7
Name two metals which will displace hydrogen from dilute acids and two metals which will not.

Q.

Question 12 (d)

Give reason why carbonate and sulphide ores are usually converted into oxides during the process of extraction.

Q.

Write the balanced chemical equation when Hydrochloric acid reacts with Zinc hydroxide?

Q.

What is/are the product(s) formed on the decomposition of metal bicarbonates?

1. Metal Carbonates

2. Water

3. Carbon Dioxide

4. Metals

Q.

Write a balanced equation when lead reacts with potassium hydroxide.

Q.

State True or False:

As we go down the reactivity series, thermal stability of metal hydroxides reduces.

1. True

2. False

Q. What is meant by the metal reactivity series? State its importance, (any two points).

Q. What are the main points of activity series?

Q. What is wrongly stated about electrochemical series

1. It does not compare the relative reactivity of metals
2. It compares relative strengths of oxidizing agents
3. H₂ is centrally placed element
4. It is the representation of element in order of increasing or decreasing standard electrode reduction potential

Q.

identify strongest and weakest reducing agent zn, cu, na, agsn?? why

Q.

On heating, Carbonates of mercury and silver decompose into ___ .

1. None of these

2. Respective metals, Oxygen, and carbon dioxide.

3. Respective metal oxides, and carbon dioxide

4. Stable towards heat