Pt1420 Unit 6 Study Guide

Chemistry Lab Question Bank (2014-2015)
Topic: Introduction

1. What is a standard solution?
2. What is a primary standard solution? Give examples.
3. What is a secondary standard solution? Give examples.
4. What is a link solution?
5. Why is KMnO4 not a primary standard solution?
6. Define equivalent weight?
7. Define end point and equivalence point?
8. Why solutions of HCl and NaOH are not primary standard solutions?
9. How many types of titrations are there? Give examples.
10. Define Molarity and write its formula?
11. Define Normality and write its formula?
12. Write any two indicators which are used in Acid-Base titrations?
13. What is complexometric titration? Give an example.
14. Which indicator is used in the estimation of hardness of
Name few indicators used in Redox titrations.
19. Why KMnO4 is acts as a self indicator. Explain it.
20. Find out oxidation states of Mn & Cr in KMnO4 & K2Cr2O7 respectively.

ESTIMATION OF FERROUS IRON BY PERMANGANOMETRY

1. Write FAS/Mohr's salt formula &molecular weight?
2. What are pre requisites of a standard solution?
3. Define primary standard solution? Give examples.
4. Define secondary standard solution? Give examples.
5. Why dil H2SO4 is added in the preparation of standard FAS solution?
6. Why KMnO4 solution needed to be standardised?
7. Why dil H2SO4 is added to FAS solution in standardisation of KMnO4?
8. Write the principle of estimation of iron (II) by permanganometry ?
9. Identify the oxidising &reducing substances in the reaction.
10. Define oxidising agent & give some examples
11. Define reducing agent & give some examples
12. What is a Redox reaction give example?
13. Why KMnO4 acts as self indicator.
14. Write the molecular wt. & equivalent wt. of KMnO4, FAS &H2SO4?
15. How would you calculate the weight of Fe+2 present in the given solution?
16. Can we replace dil. H2SO4 with HCl in this experiment?
17. What is end point colour change during the titration?
18. What is double salt? Give an