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प्रश्न
How will you distinguish between temporary hard water and permanent hard water?
उत्तर
Hard water contains dissolved magnesium and calcium ions. Temporary hardness is caused by dissolved calcium hydrogen carbonate (which is removed by boiling). Permanent hardness is caused by dissolved calcium sulfate (which is not removed by boiling).
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संबंधित प्रश्न
What do you understand by
Temporary hard water
What do you understand by
Permanent hard water
Explain with equation, what is noticed when permanent hard water is treated with
Slaked time
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you distinguish between temporary hard water and permanent hard water?
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you remove temporary hardness from water without using a chemical compound?
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you remove temporary hardness and permanent hardness from water using a chemical compound?
Both temporary & permanent hardness in water can be removed by addition of washing soda. Give balanced equations for the same.
State what are synthetic detergents. Explain experimentally how you will determine the advantage of synthetic detergents over soap using a sample of hard water.
Select the correct answer from the choice given in the options.
A substance which causes hardness in water _____.
Name or state the following:
A substance added to remove both temporary and permanent hardness in water.
Soap lathers well in hard water.
Why does hard water not form lather with soap?
The pleasant taste of drinking water is due to the presence of a dissolved substance which includes air, CO2, and minerals.
What is soft water?
Which water is hard?
Take samples of water from different sources (like a tube well, a lake, a pond, or a river) and pour equal quantities of each sample of water into different test tubes. Measure the height of water in each test tube with a scale. Add one or two drops of liquid soap to each test tube. Shake each test tube five times and observe the height of the lather in each sample. Record your observations in the table. Which water is soft? Which water is hard? Can you say why?
1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Hardness of the solution is ______.
