Methods of characterization, Chemistry

Assignment Help:

 

Introduction

Methods of characterization aim to calculate the products of a reaction. The level of detail expected depends on the circumstances, and calculates the range of methods required. If the aim has been to build a known compound, one needs to check its purity and identity. Fingerprinting techniques measure some other property or a spectrum and compare it with results published for known compounds and available in literature databases.

 

Elemental analysis

Elemental analysis is important in establishing identity of a known compound and the purity, or the empirical (stoichiometric) formulae of a new one. Elemental composition is generally quoted as percent by mass, from which the stoichiometry can be, calculate from atomic mass (RAM) values. Calculate a compound (X) with the following composition by mass:

 

2339_Untitled.png

Dividing each mass percent by the corresponding RAM (Appendix 1) gives the following relative molar quantities

 

9_Untitled.png

These are very nearly in the proportions 1:9:6:3, suggesting a stoichiometric formula CrC9H6O3.

 


Related Discussions:- Methods of characterization

Dienes, assignment of 15 pages on dienes

assignment of 15 pages on dienes

What do you understand by miller indices of a crystal plane, What do you un...

What do you understand by Miller indices of a crystal plane? Miller Indices are a symbolic vector representation for the orientation of an atomic plane in a crystal lattice an

Total number of unpaired electrons in an atom, Total number of unpaired ele...

Total number of unpaired electrons in an atom of atomic number 29 is: (1) 1        (2) 3        (3) 4        (4) 2 Ans: 1

Determine total energy of the electrons of hydrogen atom, The ratio between...

The ratio between kinetic energy and the total energy of the electrons of hydrogen atom according to Bohr's model is: (1) 2 : 1  (2)1 : 1      (3)1 : - 1           (4)

Number of nodal planes in a px, The number of nodal planes in a Px is: ...

The number of nodal planes in a Px is: (1) One        (2) Two             (3) Three             (4) Zero Ans:  One

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd