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  2. Zerewitinoff determination - Wikipedia

    en.wikipedia.org/wiki/Zerewitinoff_determination

    The Zerewitinoff determination or Zerevitinov determination is a quantitative chemical test for the determination of active hydrogens in a chemical substance [1] developed by F. V. Tserevitinov [] (jointly with L. A. Chugaev) in 1902-1907.

  3. AM1* - Wikipedia

    en.wikipedia.org/wiki/AM1*

    The method was developed by Timothy Clark and co-workers (in Computer-Chemie-Centrum, Universität Erlangen-Nürnberg) and published first in 2003. [ 1 ] [ 2 ] [ 3 ] Indeed, AM1* is an extension of AM1 [ 4 ] molecular orbital theory and uses AM1 parameters and theory unchanged for the elements H, C, N, O and F.

  4. Benson group increment theory - Wikipedia

    en.wikipedia.org/wiki/Benson_group_increment_theory

    Once this is determined, all one needs to do is take the total value of Δ f H, subtract the Δ f H caused by the C−(C) 2 (H) 2 group(s), and then divide that number by two (due to two C−(C)(H) 3 groups), obtaining the value of the C−(C)(H) 3 group. From the knowledge of these two groups, Benson moved forward obtain and list functional ...

  5. Proton nuclear magnetic resonance - Wikipedia

    en.wikipedia.org/wiki/Proton_nuclear_magnetic...

    The CH 2 peak will be split into a doublet by the CH peak—with one peak at 1 ppm + 3.5 Hz and one at 1 ppm − 3.5 Hz (total splitting or coupling constant is 7 Hz). In consequence the CH peak at 2.5 ppm will be split twice by each proton from the CH 2. The first proton will split the peak into two equal intensities and will go from one peak ...

  6. Qualitative inorganic analysis - Wikipedia

    en.wikipedia.org/wiki/Qualitative_inorganic_analysis

    Classical qualitative inorganic analysis is a method of analytical chemistry which seeks to find the elemental composition of inorganic compounds.It is mainly focused on detecting ions in an aqueous solution, therefore materials in other forms may need to be brought to this state before using standard methods.

  7. Five Ws - Wikipedia

    en.wikipedia.org/wiki/Five_Ws

    In the United Kingdom (excluding Scotland), the Five Ws are used in Key Stage 2 and Key Stage 3 lessons (ages 7–14). [6] In data analytics, the Five Ws are used in the first stage of the BADIR to identify the business problem and its context in an analytics request.

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