Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Grade: 12th pass

                        

Calculate the hardness of water sample whose 10 ml required 20 ml of EDTA solution. 20 ml of CaCl2 solution whose strength is equivalent to 1.5 g of CaCO3 per litre, required 30 ml of EDTA solution

Calculate the hardness of water sample whose 10 ml required 20 ml of EDTA solution. 20 ml of CaCl2 solution whose strength is equivalent to 1.5 g of CaCO3 per litre, required 30 ml of EDTA solution

2 months ago

Answers : (2)

Pawan Prajapati
askIITians Faculty
5328 Points
							Answer ::

The standard water contains 1.5 g of CaCO3/l.
1000 ml of standard hard water (SHW), therefore, contain 15,00 mg of CaCO3.
1 ml of standard water = 15,00/1000 = 1.5 mg of CaCO3 equivalent.
10 ml of EDTA solution = 10 ml of SHW contains
=> 10* 1.5 = 15 mg of CaCO3 equivalent
1ml o EDTA Solution = 15 / 10 = 1.5 mg of CaCo3 equivalent
Calculation of hardness of water:
100 ml of water 30 ml of EDTA solution
30 * 1.5 = 45 mg of CaCO3 equivalent
1000 ml of water = 450 mg of CaCO3 equivalent
Hardness of water = 450 mg / l

Thanks
2 months ago
Tamilarasan
15 Points
							
1ml of cacl2=1.5  mg of caco3
30 ml of cacl2 =20 mg of caco3
20 ml of cacl2 = 20*1.5 =30 mg of caco3
1 ml of cacl2 =30/30 =1 mg of caco3
10 ml of sample water = 20 ml of edta
Total hardness,
Hardness=( 20/100)*1000
         =2000 ppm
2 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 141 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts
 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details