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3 years ago

Describe the anodising process, with diagrams.

Engineering

1 answer:

Alexxx [7]3 years ago

3 0

Explanation:

Anodising process is method to protect the metal surface from corrosion.The metal surface get corroded due to presence of oxygen and due this the material loose strength .

Anodising process is also used to provide good appearance of metals.This is also called electroplating coating.

In this process metal dipped in the acidic electrolyte and pass the current,due which oxidation takes place and produce a layer on the metal surface.

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Answer:

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2 years ago

2. Explain advantages and disadvantages of computer.<br>Each five.

Salsk061 [2.6K]

Answer:

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Explanation:

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Increase your productivity. ...

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3 years ago

Imagine the reaction A + B LaTeX: \Longleftrightarrow⟺ C + D proceeds at room temperature (25 °C) and is determined to have a re

Wittaler [7]

Answer:

0.2 kcal/mol is the value of $\Delta G$ for this reaction.

Explanation:

The formula used for is:

$\Delta G_{rxn}=\Delta G^o+RT\ln Q$

$\Delta G^o=-RT\ln K$

where,

$\Delta G_{rxn}$ = Gibbs free energy for the reaction

$\Delta G_^o$ = standard Gibbs free energy

R =Universal gas constant

T = temperature

Q = reaction quotient

k = Equilibrium constant

We have :

Reaction quotient of the reaction = Q = 46

Equilibrium constant of reaction = K = 35

Temperature of reaction = T = 25°C = 25 + 273 K = 298 K

R = 1.987 cal/K mol

$\Delta G_{rxn}=-RT\ln K+RT\ln Q$

$=-1.987 cal/K mol\times 298 K\ln [35]+1.987 cal/K mol\times 298K\times \ln [46]$

$=-2,105.21 cal/mol+2,267.04 cal/mol=161.82 cal/mol=0.16182 kcal/mol\approx 0.2 kcal/mol$

1 cal = 0.001 kcal

0.2 kcal/mol is the value of $\Delta G$ for this reaction.

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3 years ago

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