You are provided a two samples of water, one containing soft water and other containing hard water. Without the help of any chemical, how will you identify the nature of the sample?

Open in App

Solution

Dear Student,

The two can be distinguished by their action with soap. Hard water due to the presence of Ca²⁺ and Mg²⁺ ions forms scum with soap, while no scum will be formed in case of soft water.

Regards,

Suggest Corrections

Similar questions

Q. You provided hard water and soft water is two seperate test tube what do you observe on adding equal quantity of soap soln to each sample of

H_{2} O

and shaking them

10

times.

Q. How will you test in the laboratory, whether the given sample of water is hard or soft ?

You are provided with two reagent bottles marked A and B. One contains $N H_{4} O H$ solution and the other contains NaOH solution. How will you identify them by a chemical test ?

You are provided with a $500 m L$ of hard water, containing $0.005 m o l e$ of $C a C l_{2}$ , and two sulphuric acid samples of $0.001 M$ and $0.02 M$ concentrations. The solubility product of calcium sulphate in water at $25^{\circ} C$ is $2.4 \times 10^{- 5}$ . Choose the most appropriate answer:

You have been provided with three test tubes .one of them contains distilled water and the other two contain an acidic solution and a basic solution , respectively. if you are given only red litmus paper,how will you identify the contents of each test tube?

Join BYJU'S Learning Program

You are provided a two samples of water, one containing soft water and other containing hard water. Without the help of any chemical, how will you identify the nature of the sample?

Dear Student, The two can be distinguished by their action with soap. Hard water due to the presence of Ca2+ and Mg2+ ions forms scum with soap, while no scum will be formed in case of soft water. Regards,

Dear Student,

The two can be distinguished by their action with soap. Hard water due to the presence of Ca²⁺ and Mg²⁺ ions forms scum with soap, while no scum will be formed in case of soft water.

Regards,