Search results
Results from the WOW.Com Content Network
The reaction of fatty acids with base is the other main method of saponification. In this case, the reaction involves neutralization of the carboxylic acid . The neutralization method is used to produce industrial soaps such as those derived from magnesium, the transition metals, and aluminium.
In chemistry and thermodynamics, the enthalpy of neutralization (ΔH n) is the change in enthalpy that occurs when one equivalent of an acid and a base undergo a neutralization reaction to form water and a salt. It is a special case of the enthalpy of reaction. It is defined as the energy released with the formation of 1 mole of water.
Although nearly 100% sulfuric acid solutions can be made, the subsequent loss of SO 3 at the boiling point brings the concentration to 98.3% acid. The 98.3% grade, which is more stable in storage, is the usual form of what is described as "concentrated sulfuric acid".
Molecular models of the different molecules active in Piranha solution: peroxysulfuric acid (H 2 SO 5) and hydrogen peroxide (H 2 O 2). Piranha solution, also known as piranha etch, is a mixture of sulfuric acid (H 2 SO 4) and hydrogen peroxide (H 2 O 2).
The photochemical Curtius-like migration and rearrangement of a phosphinic azide forms a metaphosphonimidate [21] in what is also known as the Harger reaction (named after Dr Martin Harger from University of Leicester). [22] This is followed by hydrolysis, in the example below with methanol, to give a phosphonamidate. Scheme of the Harger reaction
The reaction taking place in wet scrubbing using a CaCO 3 slurry produces calcium sulfite (CaSO 3) and may be expressed in the simplified dry form as: CaCO 3 +SO 2 → CaSO 3 + CO 2. Wet scrubbing can be conducted with a Ca(OH) 2 (hydrated lime) and Mg(OH) 2: M(OH) 2 + SO 2 → MSO 3 + H 2 O (M = Ca, Mg)
Deprotonation (or dehydronation) is the removal (transfer) of a proton (or hydron, or hydrogen cation), (H +) from a Brønsted–Lowry acid in an acid–base reaction. [1] [2] The species formed is the conjugate base of that acid. The complementary process, when a proton is added (transferred) to a Brønsted–Lowry base, is protonation (or ...
Sulfanilic acid can be produced by sulfonation of aniline with concentrated sulfuric acid. [5] This proceeds via phenylsulfamic acid; a zwitterion with a N-S bond. Eugen Bamberger originally proposed a mechanism involving a series of intramolecular rearrangements, with phenylsulfamic acid forming orthanilic acid, which rearranged to sulfanilic acid on heating.