Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
why hardness of water is caused by salts of calcium and magnesium only and not by sodium or potassium salts?
Dear deeksha,
Hardness of water is usually attributed to calcium and magnesium salts but any cation with two or more charges can cause it (eg iron(II) here). The cation will form a precipitate (scum) with soap, eg:
calcium chloride + sodium stearate (soap) → calcium stearate (scum) + sodium chloride
This scum wastes soap and can cause abrasion to clothes, as well as causing unsightly deposits round baths and showers.
Please feel free to post as many doubts on our discussion forum as you can. We are all IITians and here to help you in your IIT JEE preparation. All the best.
win exciting gifts by answering the questions on Discussion Forum.
hi
assume calcium carbonate to be present in the water .
when this water is treated with soap
calcium carbonate+sodium oliate(soap)-->sodiumcarbonate +calcium oliate
this calium oliate forms insoluble scum but sodium carbonate doesnot.
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !