Define Acids, Bases and Salts

Updated on Jan. 26, 2021 12:48 PM IST by Lakshmi Arya


Acids:- An acid is defined as a substance whose water solution tastes are sour and change the colour of blue litmus to red.
Bases:- Bases are bitter in taste and change the colour of the red litmus to blue.
Salts:- Salt is a neutral substance whose aqueous solution does not affect litmus.

Total Views: 315

Related FAQs

Q. State the number of water molecules present in crystals of washing soda and plaster of paris. What are these water molecules called as?

Ans: Washing soda crystals contain 10 molecules of water (Na2CO3 . 10H2O). Plaster of Paris crystals contain 1⁄2 molecule of water (CaSO4 . 1⁄2H2O or 2CaSO4 . H2O). These molecules of wa... read more

Q. What are olfactory indicators?

Ans: These are those indicators whose  smell changes  in  acidic  and  basic solutions.... read more

Q. Define indicator. Name two indicators obtained from plants.

Ans: Indicator  is  a  substance  which  give  different  colour or odour in acid and base. For example litmus and turmeric are indicators obtained from plants.... read more

Q. Write chemical equation for the reaction of zinc metal on sodium hydroxide.

Ans: The chemical equation for the reaction of zinc metal on sodium hydroxide is given below. Zn(s) + 2NaOH(aq)    ----------->   Na2ZnO2(aq) + H2(g)... read more

Q. Mention the range of pH for identification of a base.

Ans: A pH greater than 7 is basic. So 7.1 to 14 is the pH range for bases and 7 is neutral.... read more

Q. Name a salt which does not contain water of crystallization.

Ans: Sodium Nitrate(Nano3), Potassium Chloride(KCL), Potassium Nitrate(KNO3), Barium Sulphate(baso4 ) are the salts which does not contain water of crystallization.... read more

Q. The pH of soil ‘A’ is 7.5, while that of soil “B is 4.5. Which of the two soils A or B should be treated with powdered chalk to adjust the pH and why?

Ans: This question answer is Soil B. As Soil B having pH 4.5 should be treated with powdered chalk to adjust its pH. Because soil B is too acidic and its acidity can be reduced by adding powdered chalk (Ca... read more

Q. Write the chemical equation to describe how baking soda is produced on a large scale.

Ans: The Chemical reaction is given below:- NH3   +   H2O  +   CO2   +    NaCL      ----------->     NaH... read more