The definition and example of given terms, advantages and disadvantages of hydrometallurgy and the process of zone refining is to be stated. Concept introduction: The process of extraction of metals from their ores and that too in pure form is called metallurgy. For the conversion of metal sulphide or oxide into metal, the ore needs to be reduced either using physical, chemical or electrical methods.

Question

An expression for the root mean square velocity, vrms, of a gas was derived. Using Maxwell’s velocity distribution, one can also calculate the mean velocity and the most probable velocity (mp) of a collection of molecules. The equations used for these two quantities are vmean=(8RT/πM)1/2 and vmp=(2RT/M)1/2 These values have a fixed relationship to each other.(a) Arrange these three quantities in order of increasing magnitude.(b) Show that the relative magnitudes are independent of the molar mass of the gas.(c) Use the smallest velocity as a reference for establishing the order of magnitude and determine the relationship between the larger and smaller values.

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Chapter 20, Problem 10RQ

Interpretation Introduction

Interpretation: The definition and example of given terms, advantages and disadvantages of hydrometallurgy and the process of zone refining is to be stated.

Concept introduction: The process of extraction of metals from their ores and that too in pure form is called metallurgy. For the conversion of metal sulphide or oxide into metal, the ore needs to be reduced either using physical, chemical or electrical methods.

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