103 CHEMISTRY

MODEL QUESTIONS

ENGINEERING CHEMISTRY

Time:2 Hrs

I 1) Define standard hydrogen electrode

2) Derive the equations for the rate constant of zero order & first order reactions.

3) What is emf of a cell? How is it measured?

II 1) Explain metal-metal insoluble salt electrode. Illustrate with an eg.

2) What is half life period? Derive an expression for the half life period of third order

Reaction.

3) Discuss about reference electrode.

III 1) Give a brief short note on concentration cells.

2) What are solar cells? Explain its principle?

3) Discuss about fast reactions. Explain the technique to study their kinetics.

IV 1) Discuss about Fuel cells . Illustrate with an eg.

2) Give an expression which gives the relation b/w rate constant & Activation

energy.. Explain the terms in it.

3) Explain the working of lead acid cell.

V 1) Explain the polarization in voltaic cell.

2) What is the buffering action of acetic acid-sodium acetate mixture? Derive

Henderson’s equation

3) Explain the Lewis concept about acids & bases.

VI 1) Derive the relationship b/w Ph& Poh.? What is its significance? Derive an

expression to study Acidity constants.

2) What is Salt bridge ? What are its functions?

3) Give short notes on : Over voltage & Polarization.

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