Table 2.1 class 10 science solution

Today we will understand Table 2.1 class 10 science solution in detail. Through Table 2.1, we are going to find the nature of solutions whether they are acidic or basic in nature.

We have to find the nature of the following solutions

 

Solutions

`HCl`

`H_2SO_4`

`HNO_3`

`CH_3COOH`

`NaOH`

`Ca(OH)_2`

`KOH`

`Mg(OH)_2`

`NH_4OH`

These solutions are easily available in the chemistry lab.

We have the following indicators through which we will find the nature of the given solutions

Sample solutions	Red litmus solution	Blue litmus solution	Phenolphthalein solution	Methyl orange solution

 

Now we take the given solution in watch glasses, pour drops of indicators one by one and observe the change in colour of the given solution.

On the basis of colour change, we can decide whether the given solutions are acidic or basic in nature.

Table 2.1 Solutions 

Sample solutions	Red litmus solution	Blue litmus solution	Phenolphthalein solution	Methyl orange solution
`HCl`	No change	Change to red	colourless	Change to red
`H_2SO_4`	No change	Change to red	colourless	Change to red
`HNO_3`	No change	Change to red	colourless	Change to red
`CH_3COOH`	No change	Change to red	colourless	Change to red
`NaOH`	Change to blue	No change	Change to light pink	Change to yellow
`Ca(OH)_2`	Change to blue	No change	Change to light pink	Change to yellow
`KOH`	Change to blue	No change	Change to light pink	Change to yellow
`Mg(OH)_2`	Change to blue	No change	Change to light pink	Change to yellow
`NH_4OH`	Change to blue	No change	Change to light pink	Change to yellow

 

      Table 2.1 Class 10 Science Solution Video

Related Topics

1. Table 2.2 Solution

FAQs

   1.  What are acid-base indicators?

Ans – Acid-base indicators are substances that change colour in response to variations in the `P^H ' of the given solution. these substances indicate whether a solution is acidic, neutral or alkaline.

 

   2.  What are the examples of acid-base indicators?

Ans – Phenolphthalein, litmus and methyl orange are some acid-base indicators.

   3.  What  do acid-base indicators measure?

Ans – Acid-base indicators measure the `P^H` of the solution and provide an indication that the solution is acid(low `P^H`), neutral (`P^H`=7) and alkaline (high `P^H`).

   4.  What causes acid-base indicators to change colour?

Ans - Acid-base indicators are also called `P^H` indicators. They change colour due to a reversible chemical reaction in response to a change in the concentration of hydrogen ions or hydroxyl ions.

   5.  Do all acid-base indicators undergo a colour change at the same `P^H`?

Ans - No, different acid-base indicators have different `P^H` ranges over which they change colour. The range of colour change depends on the chemical properties of the indicator.

   6.  When  do we use acid-base indicators in everyday life?

Ans - Acid-base indicators are used in different areas like – testing the `P^H` of the swimming pool, determining the acidity of the soil, and checking the `P^H` of household cleaning products.

   7.  Why do you use different acid-base indicators?

Ans - Different acid-base indicators have distinct `P^H` ranges as they change the colour and help determine the `P^H` of a solution accurately.

   8.  What properties do acid-base indicators have?

Ans - Acid-base indicators have the property of changing the colour in response to changes in the concentration of `H^+` ions or `OH^-` ions.