Question

Fill in the blanks :
A. Bases tend to taste _____________ and feel ____________
B. Like acids, aqueous basic solutions conduct _, and are identified as.
C. Bases react with __________ to produce a salt and _________.
D. Bases turn _________________ different colours.

Answer 1

Many blanks are given in between sentences related to base ( A base is a substance which dissociates in the aqueous solution to form hydroxide ions ($O{H^ - }$)). We have to fill it with suitable words.

Complete step by step answer:
-Bases tend to taste bitter and feel soapy. [Bases are bitter and soapy to touch]
The fatty acids present in our skin are acidic so when they react with bases ( present in soaps) a soapy texture is felt . Soaps are also manufactured using this concept only.
When fatty acids react with sodium hydroxide (base) then soaps are produced .

-Like acids, aqueous basic solutions conduct electricity, and are identified as electrolytes.
Substances that give ions when dissolved in water are called electrolytes.
They can be divided into acids, bases, and salts, because they all give ions when dissolved in water.
The conductance of electricity in basic solution is due to the mobility of negative and positive ions , that is anions and cations .

-Bases react with acid to produce salt and water. [Neutralization]
When acids and bases react with each other neutralization takes place , ${H^ + }$ ions and $O{H^ - }$
ions are released from acids and bases respectively which form water and formation of salt also takes place.

-Bases turn blue, indigo, violet (three) different colours.
They have different colours corresponding to their pH level .

Note: We should be very careful while handling acids and bases . Bases which are strong are corrosive and if they come in contact with our skin they can cause inflammation , blisters and burns .