Question

Pearl ash is :
a.) NaCl
b.) ${K_2}C{O_3}$
c.) $NaHC{O_3}$
d.) $KHC{O_3}$

Answer 1

Pearl ash is also called potash. It has the same chemical formula as potash. It is a white salt that is soluble in water. It often appears as wet solid. It is hygroscopic in nature. The potash does not boil but decomposes. It is used in the manufacture of soap and glass. It is used as a mild drying agent.

Complete answer:
This type of question is very easy and can fetch us marks in seconds if we know this. But if we don’t know, we can not do anything at the exam. So, some things like this need to be remembered well before the exam. The pearl is also called potash. It is potassium carbonate.
We know that the potassium has the chemical symbol ‘K’ and carbonate is $CO_3^{2 - }$. The potassium carbonate is chemically written as - ${K_2}C{O_3}$.

So, the option b.) is the correct answer.

Note: It must be noted that it has wide industrial applications. It is used in the manufacture of soap and glass. It is used as a mild drying agent. It is used in the production of grass jelly. It is used in many cuisines. It has important use as a buffering agent in the production of wine. It was earlier used to soften the water. It is used as an animal feed ingredient to fulfil potassium requirements in animals. It is used as an ingredient in welding fluxes and flux coating on arc welding rods.