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  2. Salt metathesis reaction - Wikipedia

    en.wikipedia.org/wiki/Salt_metathesis_reaction

    A salt metathesis reaction is a chemical process involving the exchange of bonds between two reacting chemical species which results in the creation of products with similar or identical bonding affiliations. [1] This reaction is represented by the general scheme: For more details about displacement reactions, go to single displacement reaction.

  3. Golden rain demonstration - Wikipedia

    en.wikipedia.org/wiki/Golden_rain_demonstration

    The golden rain chemical reaction demonstrates the formation of a solid precipitate. The golden rain experiment involves two soluble ionic compounds, potassium iodide (KI) and lead (II) nitrate (Pb (NO 3) 2). They are initially dissolved in separate water solutions, which are each colorless. When mixed, as the lead from one solution and the ...

  4. Chemical reaction - Wikipedia

    en.wikipedia.org/wiki/Chemical_reaction

    A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. [1] When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated. Classically, chemical reactions encompass changes that only involve the positions ...

  5. Wöhler synthesis - Wikipedia

    en.wikipedia.org/wiki/Wöhler_synthesis

    Alternatively the reaction can be carried out with lead cyanate and ammonia. [4] The actual reaction taking place is a double displacement reaction to form ammonium cyanate: Pb(OCN) 2 + 2 NH 3 + 2 H 2 O → Pb(OH) 2 + 2NH 4 (OCN) Ammonium cyanate decomposes to ammonia and cyanic acid which in turn react to produce urea: NH 4 (OCN) → NH 3 ...

  6. Substitution reaction - Wikipedia

    en.wikipedia.org/wiki/Substitution_reaction

    A substitution reaction (also known as single displacement reaction or single substitution reaction) is a chemical reaction during which one functional group in a chemical compound is replaced by another functional group. [1] Substitution reactions are of prime importance in organic chemistry. Substitution reactions in organic chemistry are ...

  7. Single displacement reaction - Wikipedia

    en.wikipedia.org/wiki/Single_displacement_reaction

    A single-displacement reaction, also known as single replacement reaction or exchange reaction, is an archaic concept in chemistry. It describes the stoichiometry of some chemical reactions in which one element or ligand is replaced by atom or group. [1][2][3] It can be represented generically as: where either. is a cation.

  8. Nucleophilic substitution - Wikipedia

    en.wikipedia.org/wiki/Nucleophilic_substitution

    The two main mechanisms were the S N 1 reaction and the S N 2 reaction, where S stands for substitution, N stands for nucleophilic, and the number represents the kinetic order of the reaction. [4] In the S N 2 reaction, the addition of the nucleophile and the elimination of leaving group take place simultaneously (i.e. a concerted reaction).

  9. Allylic rearrangement - Wikipedia

    en.wikipedia.org/wiki/Allylic_rearrangement

    Allylic rearrangement. An allylic rearrangement or allylic shift is an organic chemical reaction in which reaction at a center vicinal to a double bond causes the double bond to shift to an adjacent pair of atoms: It is encountered in both nucleophilic and electrophilic substitution, although it is usually suppressed relative to non-allylic ...