The term hard and soft acid is a qualitative one which refers to the polarizability of the acid (and typically refers only to Lewis acids). A soft acid is one that is highly polarizable, whereas a hard acid is one that is not polarizable.
For more information, and a list of many examples of hard and soft acids, see the Web Links to the left.
Plastic can be soft or hard, depending on its composition and processing. Some plastics are engineered to be flexible and soft, while others are rigid and hard.
It is a limestone, hard.
Its hard
well It Is hard because all rocks are hard
Lemons and soft drinks both contain citric acid, a weak organic acid that gives them a sour taste. Citric acid is commonly used as a preservative and flavoring agent in food and beverages. This chemical property contributes to the acidic pH of both lemons and soft drinks.
Hard
Hard nucleophiles are small, highly charged ions with localized electron density, while soft nucleophiles are larger, less charged ions with more diffuse electron density. Hard nucleophiles prefer to react with electrophiles that are also hard, while soft nucleophiles prefer soft electrophiles. This selectivity is known as the hard and soft acid-base theory. The reactivity of nucleophiles in chemical reactions is influenced by their size, charge, and electron density, with hard nucleophiles typically reacting faster with hard electrophiles, and soft nucleophiles reacting faster with soft electrophiles.
soft cheeses are typically easier to digest than hard. Hard cheese requires an acid environment, much like meat in order to digest.
it is hard and sometimes soft
hard
soft you can bend and hard you can not
Citric acid is found in most soft drinks.Carbonic acid
They do not react based on hard-soft acid base theory. Na+ is a hard acid, Cl-is a hard base, and even if I-were formed, it's a soft base and therefore would not replace Cl-in sodium chloride.
soft
Soft
"Treated wood can be soft or hard." But, generally what is bought from a lumberyard is soft.
No. Soft drinks are acidic as they contain carbonic acid and often phosphoric acid.