A final check of atom and charge balance confirms the equation is balanced.
Reactants
Products
Fe
6
6
Cr
2
2
O
7
7
H
14
14
charge
24+
24+
Check your learning
In acidic solution, hydrogen peroxide reacts with Fe
2+ to produce Fe
3+ and H
2 O. Write a balanced equation for this reaction.
Answer:
Key concepts and summary
Chemical reactions are classified according to similar patterns of behavior. A large number of important reactions are included in three categories: precipitation, acid-base, and oxidation-reduction (redox). Precipitation reactions involve the formation of one or more insoluble products. Acid-base reactions involve the transfer of hydrogen ions between reactants. Redox reactions involve a change in oxidation number for one or more reactant elements. Writing balanced equations for some redox reactions that occur in aqueous solutions is simplified by using a systematic approach called the half-reaction method.
Chemistry end of chapter exercises
Use the following equations to answer the next five questions:
i.
ii.
iii.
iv.
v.
(a) Which equation describes a physical change?
(b) Which equation identifies the reactants and products of a combustion reaction?
Silver can be separated from gold because silver dissolves in nitric acid while gold does not. Is the dissolution of silver in nitric acid an acid-base reaction or an oxidation-reduction reaction? Explain your answer.
It is an oxidation-reduction reaction because the oxidation state of the silver changes during the reaction.
Classify the following as acid-base reactions or oxidation-reduction reactions:
(a)
(b)
(c)
(d)
(e)
(f)
(a) acid-base; (b) oxidation-reduction: Na is oxidized, H
+ is reduced; (c) oxidation-reduction: Mg is oxidized, Cl
2 is reduced; (d) acid-base; (e) oxidation-reduction: P
3− is oxidized, O
2 is reduced; (f) acid-base
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include:
1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body
the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature