Question

hort Questions:
1. Name three common household substances having
a. pH value greater than 7
b. pH value less than 7
c. pH value equal to 7
2. Define a base and explain all alkalies are bases, but all bases are not alk
3. Define Bronsted-Lowry base and explain with an example that watu
Bronsted-Lowry base.
4. How can you justify that Bronsted-Lowry concept of acid and bu
applicable to non-aqueous solutions?
5. Which kind of bond forms between Lewis acid and a base?
6. Why Hion acts as a Lewis acid?
7. Name two acids used in the manufacture of fertilizers.​

Answer 1

Answer:

7- nitric acid and sulphuric acid are used in fertilizer

1-a,b

Answer 2

Following question and its appropriate answer are mentioned below.

Explanation:

Three common household substances having

a. pH value greater than 7  

1. Carbonic acid  which is soft drinks

2. Vinegar which is present in acetic acid. It is widely used in cooking.

3. Citric acid which is present in lemons

b. pH value less than 7

1. Sodium bicarbonate which is also called baking soda,It is used in cooking.

2. Sodium hydroxide which is also called caustic soda

3. Bleaching powder-It contains sodium or calcium hypochlorite.)

c. pH value equal to 7

Pure water has a neutral pH of 7

Mild Dish Soap: pH 7 to 8

2. Define a base and explain all alkalis are bases, but all bases are not alkalis

-Base is a substance that neutralizes acid and Alkalis is a substance that is soluble in water.

- All bases are not soluble in water

- All alkali are bases but all bases are not alkali.

3. Define Bronsted-Lowry base and explain with an example that was

Bronsted-Lowry base.

The substance which can accept a proton from any other substance is called a Bronsted base. Example -Ammonia

4. How can you justify that Bronsted-Lowry concept of acid and base

applicable to non-aqueous solutions?

• Here it deals with non-aqueous solutions.
• In this concept acid is a substance that is a molecule or ion which can donate a proton (H+) from itself to another substance.
• A base is a substance that can accept a proton (H+) for itself from another substance.

For example - The reaction between HCl and NH3 takes place as follows

          $HCl(aq) + NH3(aq) ------ NH4+(aq) + Cl-(aq)$

5. Which kind of bond forms between Lewis acid and a base?

In Lewis acid-base reaction -

A base will donate a pair of electrons to an acid.

In Lewis acid-base adduct -Name two acids used in the manufacture of fertilizers.

In such a compound coordinate covalent bond occurs in between the Lewis acid and the Lewis base.

6. Why H ion acts as a Lewis acid?

H+ ion will act as lewis acid as it accepts the electron pair from a base

7. Name two acids used in the manufacture of fertilizers ?

Acids that are used in the the the manufacture of fertilizers are Phosphoric acid and sulfuric acid.

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