A water purification plant uses a process to remove harmful ions. Which type of reaction would most likely be used for this purpose?
Double displacement reaction
A double displacement reaction (also called metathesis) has the form AB + CD → AD + CB; it is the standard chemistry behind ion-exchange / precipitation steps used in water treatment to remove harmful ions such as calcium, magnesium, iron or heavy-metal cations by exchanging them for benign ions.
Decomposition breaks one compound into simpler ones, combustion needs oxygen to release heat, and synthesis combines elements into a compound — none of these targets the removal of specific ions from water.
Hence, Double displacement reaction.
Similar Questions
In a laboratory demonstration, a student adds hydrochloric acid to sodium hydrogencarbonate and collects the gas. How can the student confirm it is carbon dioxide?
What is the typical size range of particles in a colloidal solution?
Which of the following shows oxidation?
Which of the following particles is essential for determining the isotope of an element?
Which process leads to the formation of a positive ion?
Select the option that completes the following chemical reaction by giving the formula of the products X and Y.
2Na + 2CH3CH2OH → X + Y
Read the given statements carefully and select the correct option.
Statement-I: In saturated carbon compounds, valency of all the atoms is satisfied by single bonds between them.
Statement-II: Saturated carbon compounds are normally not very reactive.
Which combination will result in a salt and water only?
What does the size of an atom mainly depend on?
In the presence of sunlight, chlorine is added to hydrocarbons in a very fast reaction. Chlorine can replace the hydrogen atoms one by one. It is called a/an __________ reaction.
Important Questions from Chemistry
What is deposited on iron in the process of Galvanization?
Which element is used for making solar cells?
Which gas is flushed in a bag of chips to prevent the chips from getting oxidized?
Terylene is a type of:
Who was the first Indian lady scientist who worked with organic chemistry and medicinal plant?
