what are the properties of base??

Subject:
CBSE BOARD X
Author:
sebastian87
Created:
1 year ago

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demócritoh8dr
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Answer:

Chemists refer to a proton accepting molecule and ion as a base. Thus OH- is a base. They keep the term “alkali” for bases dissolved in water. So for instance sodium hydroxide NaOH dissolves in water, separating into Na+ ions and OH– ions. It is therefore a source of the base OH– and the solution is an alkali.

Physical Properties of Bases

Bases taste bitter – There are very few food materials that are alkaline. It is even more important that care be taken in tasting bases. Tasting bases is more dangerous than tasting acids because of the property of stronger bases to denature protein.

Bases release a hydroxide ion in a water solution.

Bases neutralise acids in a neutralisation reaction – The word reaction means that an acid plus a base makes water plus a salt. Symbolically where “Y” is the anion of acid “HY”. ‘X’ is the cation of base ‘XOH’ and ‘XY” is the salt in the product, the reaction isHY + XOH → HOH + XY

Bases denature protein – This accounts for the slippery feeling on the hands when exposed to a base. Strong bases that dissolve in water well, such as sodium or potassium lye, are very dangerous because a great amount of the structural material of human beings is made of protein. Serious damage to flesh can be avoided by careful use of strong bases.

Bases turn red litmus to blue – This is not to say that litmus is the only acid base indicator, but that it is likely the oldest one.

Explanation: