In the previous post, we learned that getting an appropriate representative sample for analysis is a very important step in getting accurate results.In this post,
Category: Analytical Chemistry
150.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(14) – Sampling(1).
We talked about different methods of analysis in the previous post and inferred that only with experience and intuition , we can choose a correct
149.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(13) – Methods of Analysis.
Analytical chemistry is all about analysis. In this post, we shall look at the various methods of analysis that we encounter in this branch of
148.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(12) – Concentration units(7).
1. Calculate gram equivalents of the following – (Given – Eq.wt of O=8,Al =9)i)7 × 10-3 kg of oxygen.ii) 4.5 × 10-3 kg of aluminium
147.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(11) – Concentration units(6)- Normality (5).
In the previous posts,we have studied in detail, how to find n-factor and equivalent weight for a number compounds.In this post we shall talk more
146.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(10) – Concentration units(5)- Normality (4).
SALTS Salts are ionic compounds, consisting of cations (positively charged ions) and anions (negatively charged ions). e.g.- CuSO4 ⇒ Copper sulfate is a salt that
145.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(9) – Concentration units(4)- Normality (3).
BASES In general, a base is a compound that yields OH– ion/s on dissociation. Example 5 – Let us now consider a base, sodium hydroxide
144.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(8) – Concentration units(3)- Normality (2).
In this post, we will specifically look at some acids whose n-factor calculation can seem a little tricky. We will study the structure of these
143.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(7) – Concentration units(2)- Normality (1).
4.Normality Normality is a concentration unit that uses chemical equivalent or gram equivalent term. This concentration term is not very commonly used in today’s laboratories.
142.FUNDAMENTALS OF ANALYTICAL CHEMISTRY(6) – Concentration units(1).
In analytical chemistry one often has to deal with solutions and thus it is very important to know parameters used to define concentration. A solvent
141.Fundamentals of Analytical Chemistry(6) – The mole concept(4).
Before starting to solve problems on the mole concept, let us jot down a few important formulae – Let us solve some problems based on
140.Fundamentals of Analytical Chemistry(5)- The Mole concept(3).
In the previous post, we discussed how to relate a measurable quantity , volume , to a mole. In this post we will discuss how
139.Fundamentals of Analytical Chemistry(4) – The Mole Concept(2)
In the last post we left some questions unanswered. Questions like – How does one relate the number of particles to volume and mass of
138.Fundamentals of Analytical Chemistry(3)-The Mole Concept(1).
In this post, we are going to study one of the most seminal concepts, not only in analytical but in entire chemistry. Understanding this concept
137.Fundamentals of Analytical Chemistry(2) – Introduction(2).
9.Confidence Limit (CL)- The confidence limit is the level of confidence we have about a value being statistically significant. Confidence Limit (CL)= 100 × (1 − α)
136. Fundamentals of Analytical Chemistry (1)-Introduction(1).
From this post onwards we will start getting acquainted with some fundamentals of analytical chemistry. What is analytical chemistry? What all topics does it encompass?
20.Significant Figures(2).
Since our last post we are trying to get an overview of the concept of significant figures and we shall continue to do so in
19.Significant Figures(1).
We have been exploring the topics ‘measurements’ and ‘errors‘ in the previous few posts. Whatever we have learned till now,can be recapitulated as follows –
18.Analysis of errors(3)-Deviation and Standard Deviation.
Our last post was all about studying different parameters and formulas. In this post let us study two very important concepts, from among various parameters
17.Analysis of errors(2).
We have been studying all about errors in the last few posts.We continue our discussion further and talk in greater detail about ways of expressing
16.Analysis of Errors(1)- Accuracy and Precision.
As mentioned in my earlier post , we start this post with the introduction of two new parameters in error analysis namely – ACCURACY & PRECISION.
15.Calculation of Errors.
In the last post we discussed how measurements are subject to errors and the different types of errors that one might come across.In this post
14.Errors
As mentioned in the last post, the unawareness of uncertainties in our measurement renders our experimental data insignificant.While measuring any quantity, there can be
