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
Menu
Grade: Upto college level
        25ml of a 0.107M H3PO4 was titrated with a 0.115M solution of a NaOH solution to the end point identified by the colour change of the indicator, Bromocresol green.

This required 23.1ml. The titration was repeated using phenolphthalein indicator. This time 25ml of 0.107M H3PO4 {Phosphoric acid} required 46.8ml of the 0.115M NaOH. What is the coefficient n in the equation,
H3PO4 + nOH- = nH2O + [H(3-N) PO4]
for each reaction?
Ans (1;2)
Sir, it is the question of "Modern Approach To chemical calculations" by Ramendra c. Mukerjee, page no.154, Q.no.34.
10 years ago

Answers : (1)

atharva b.
8 Points
							

the coefficient n is nothing but valence factor for the reaction.

since at end pt gm equivts are equal so

    25*0.107*n=0.115*23.1

this gives n=0.99=1. similarly for other reaction.

note that the valence factor totally depends on the reaction and can be different for a substance in 2 reactions

 

9 years 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

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details