Neng : What is an electrochemical cell?
An expert :The place where chemical energy is converted into electrical energy, or electric energy is converted into chemical energy.
Electrochemical cells are divided into voltaic cells [galvani cells] and electrolysis cells.
Neng : What is corrosion?
An expert :Metal corrosion is a spontaneous redox reaction that is quite complex and can be understood with the concept of electrochemical cells.
Neng: Is corrosion always harmful?
An expert : Basically corrosion is the destruction of the metal, but the oxide layer that is formed is not always detrimental. For example in corrosion of aluminum metal, the formed oxide layer is strong and solid, thus protecting Al metal from further corrosion.
Neng: Corrosion is also referred to as electrochemical cells in nature. Based on the statement, then on the corroded metal there is anode and cathode. Explain the anode and cathode parts on a corroded piece of iron!
An expert : In moist air, the iron tends to corrodate, especially in areas that are scratched or bent. Such an area is called anode while the other regions on iron serve as cathode.
An expert : The content of H2O and O2, pH, temperature, the presence of impurities, electrolyte and concentration, galvanic coupling, and metallurgical factors.
Neng: Describe methods that can protect the material against corrosion!
An expert :Use a protective coating to prevent direct contact with H2O and O2
B) Using cathode protection
C) Using anode protection
Why corrosion can destroy metal?
BalasHapusBecause the metal on the outside is the reacting with the surrounding environment so that this corrosion event destroys the metal to the inside as well
HapusHow to prevent corrosion?
BalasHapusUsing the cathode protection and anode protection
HapusBy coating it with a metal that is more readily reacted by mixing the metal with the other metal also byswearing or coating with oil, it can prevent and slow the occurrence of corrosion
HapusWhether aluminum can corrode, if yes give the reaction?
BalasHapusYes, aluminum can also corrode, and corrosion resistance on aluminum based on aluminum based on its purity, aluminum generally with a concentration of 99 percent and above if used will hold up for many years.
HapusWhy iron faster corrosion?
BalasHapusBecause its valence electrons are still and more likely to bind.
HapusWhat metal causes the most perilous perils of the perilous, please explain?
BalasHapusCan pollute even more dangerous environments can enter the body
HapusHow to prevent corrosion?
BalasHapusCan use cathode protection and anode protection
HapusWhat chemicals make non-metals unaffordable?
BalasHapusMany elements and compounds are not classified normally as metals to metals at high pressures; This is formed as a metallic allotropy of nonmetals.
HapusDoes corrosion affect the body if swallowed?
BalasHapusCorrosives can burn and destroy body tissues on contact. The stronger, or more concentrated, the corrosive material is and the longer it touches the body, the worse the injuries will be.
HapusSome corrosives are toxic and can cause other health problems. Check the MSDS and label on the container for warnings of other possible health effects.
An example is the chemical glutaraldehyde. It has been used as a disinfectant and sterilizing agent in medical and dental settings as well as other uses. It is harmful if inhaled or swallowed. Glutaraldehyde can be irritating or corrosive to the respiratory tract, eyes and skin. It may cause permanent eye injury. It is also a skin sensitizer as it may cause (severe) allergic skin reactions.
What is the ideal gas relationship With stokiometry ?
BalasHapus