Redox reactions identifying type

Balance each of the following skeletal equations and classify the reaction as Bronstcd-I. owry acid-base, Ix wis acid-base, or redox. For both types of acid-base reactions, identify the acid and the base. For redox reactions, identify the reducing agent and the oxidizing agent. 

Practice Exercise Identify the following redox reactions by type ... 

Soluble sulfides (i.e., H S, HS" and S ", with sulfur at minus two oxidation state) are chemically very reactive. The two general types of soluble-sulfide reactions may be identified as precipitation reaction (type A) and redox reaction (type B). 

In this chapter, you will be introduced to oxidation-reduction reactions, also called redox reactions. You will discover how to identify this type of reaction. You will also find out how to balance equations for a redox reaction. 

Delocalized H+ counterions are denoted with a subscript f, while H+ species which transfer between tbe film and bulk solution during the redox reaction are identified by the subscripts s. Thus, for each electron injected into the film there is a simultaneous transfer of one proton, i.e. Hs +, from the solution bulk into the hydrous oxide material, while at the same time there is a transfer locally of 1.5 protons into the ligand sphere of the central metal ion for each electron added to the latter. Proton transport is likely to occur via a Grotthus-type mechanism in these films and is much more likely than OH movement as suggested by other authors [144]. 

Only one copper ion has been found in the preparations of both F8a and F5a. It was identified as a type 2 copper (Bihoreau et al., 1994 Mann et al., 1984 Tagliavacca et al., 1997). It is beheved that the single copper ion is not involved in any redox reaction and instead it plays a structural role by stabilizing the association of domain Al with domain A3 in the active trimeric complex. This is a very unusual role for a d redox-active transition metal in biology. Mutant F8 in which the type 2 copper ligand His-195 7 was replaced with Ala displayed secretion, active complex assembly, and activity similar to that of wild-type protein, while a mutant in which the second ligand for the type 2 copper, His-99, was replaced with Ala was partially defective for secretion and had low levels of active complex formation and activity (Tagliavacca et al., 1997). 

It may also be used to remove SO2 from power-plant stack gases, (a) Identify the type of redox reaction it is. (b) Calculate the equilibrium constant Kp) at 25°C and comment on whether this method is feasible for removing SO2. (c) Would this procedure become more or less effective at a higher temperature ... 

Two isozymes of IPP isomerase have been identified. Type I IPP isomerase, an enzyme containing two divalent metal ions (Zn " " and Mg ), has been studied for decades. More recently, type II IPP isomerases have been identified. " These enzymes require Mg " " and reduced FMN to be active,even though the overall reaction has no redox change. 

SAMPLE PROBLEM 4.8 Identifying the Type of Redox Reaction... 

Identify three important types of redox reactions that include elements combination, decomposition, displacement ( 4.6) (SP 4.8) (EPS 4.59-4.73)... 

Diborane reacts with ammonia to form an ionic compound (there are no other products). The cation and anion each contain one boron atom, (a) Predict the identity and formula of each ion. (b) Give the hybridization of each boron atom, (c) Identify the type of reaction that has occurred (redox, Lewis acid-base, or Bronsted acid-base). 

Seven chemical reactions were identified from the chemistry syllabus. These chemical reactions were selected because they were frequently encountered during the 2-year chemistiy course and based on their importance in understanding concepts associated with three topics, namely, acids, bases and salts, metal reactivity series and inorganic chemistry qualitative analysis. The seven types of chemical reactions were combustion of reactive metals in air, chemical reactions between dilute acids and reactive metals, neutralisation reactions between strong acids and strong alkalis, neutralisation reactions between dilute acids and metal oxides, chemical reactions between dilute acids and metal carbonates, ionic precipitation reactions and metal ion displacement reactions. Although two of the chemical reactions involved oxidation and reduction, it was decided not to include the concept of redox in this study as students had only recently been introduced to ion-electron... 

The NO/NO+ and NO/NO- self-exchange rates are quite slow (42). Therefore, the kinetics of nitric oxide electron transfer reactions are strongly affected by transition metal complexes, particularly by those that are labile and redox active which can serve to promote these reactions. Although iron is the most important metal target for nitric oxide in mammalian biology, other metal centers might also react with NO. For example, both cobalt (in the form of cobalamin) (43,44) and copper (in the form of different types of copper proteins) (45) have been identified as potential NO targets. In addition, a substantial fraction of the bacterial nitrite reductases (which catalyze reduction of NO2 to NO) are copper enzymes (46). The interactions of NO with such metal centers continue to be rich for further exploration. 

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