Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Read the following statement and answer as per instructions in option Statement 1: During the titration of

Read the following statement and answer as per instructions in option

Statement 1: During the titration of N{{a}_{2}}C{{O}_{3}} with HCl if we use methyl orange as an indicator, the volume of HCl required to obtain equivalence point is twice to that of the acid required in case we use phenolph thalein as an indicator.

Statement 2: For complete neutralisation of one mole of N{{a}_{2}}C{{O}_{3}}  two moles of HCl are required.

Option: 1

Statement1 is true; Statement 2 is true; and Statement2 is the correct explanation of Statement1.


Option: 2

Statement1 is true; Statement 2 is true; and Statement2 is not the correct explanation of Statement1.


Option: 3

Statement1 is true; Statement 2 is not true.


Option: 4

Statement1 is not true; Statement 2 is true.

 


Answers (1)

best_answer

Both statements are true, but Statement 2 is not the correct explanation of Statement 1. 

Since phenolphthalein and methyl orange changes colour at different pH values, thus the different volume of titrant is required to neutralize the analyte and obtain the equivalence point.

Phenolphthalein changes its colour to pink at a pH above 9.0, whereas methyl orange changes its colour to reddish-orange at a pH below 4.3.

Posted by

sudhir.kumar

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

17 left in NEET toppers list 2024 as physics question strips 44 of top ranks
anam-khan

NEET Revised Result 2024: Joy and disappointment as all-India ranks change by thousands of places
anam-khan

NEET UG 2024 cut-offs drop for all categories; final scorecard out at neet.ntaonline.in

Latest Question