Question

The formula of caustic potash is:
A. $N{H_4}OH$
B. $Al{(OH)_3}$
C. $KOH$
D. None of the above

Answer 1

Hint: In order to answer this question, you must directly know the formula of caustic potash. If you don’t know the formula, then go through its properties and then determine that the p\specific property holds due to which component in the compound and then by this method you can easily eliminate the wrong options. At last you will be left over with the correct answer.

Complete answer:Potassium hydroxide is an inorganic compound with the formula KOH and is commonly called caustic potash. Along with sodium hydroxide $(NaOH)$which is known as caustic soda, this is a colourless solid and a prototypical strong base.And, in case if you don’t remember the name, you can guess the name by going through the following properties: Chemical formula of potassium hydroxide is $KOH$ . It is also known as caustic potash, it is a strong base it is sold in markets in several forms including pellets, flakes, and powders. It is used in various chemical, industrial and manufacturing processes. Potassium hydroxide is used in food to maintain pH, as a stabilizer, and as a thickening agent.This ingredient has been proved safe as a direct human food ingredient by the FDA, based upon the observance of several good manufacturing practice conditions of use.Other uses of potassium hydroxide is making soap, as an electrolyte in alkaline batteries and in electroplating of metals, lithography, and paint and varnish removers.

Hence, the correct answer is Option C.

Note:In markets, Potassium hydroxide is sold as translucent pellets, which become tacky in air because $KOH$ is hygroscopic. Consequently, $KOH$ typically contains varying amounts of water. Its dissolution in water is strongly exothermic. Concentrated aqueous solutions are sometimes called potassium lyes. Even at high temperatures, solid $KOH$ does not dehydrate readily