What is lever rule explain?

What is lever rule explain?

In chemistry, the lever rule is a formula used to determine the mole fraction (xi) or the mass fraction (wi) of each phase of a binary equilibrium phase diagram.

Why is it called the inverse lever rule?

This figure also helps us understand why these equations are called “the lever rule.” Sometimes it is also known as the “reverse arm rule,” because for the calculation of αL (liquid) you use the “arm” within the (yA-xA) segment closest to the vapor, and for the vapor calculation (αG) you use the “arm” closest to the …

What is the application of lever rule in phase diagram Slideshare?

Lever Rule• To determine compositions of phases and the relative proportions of phases to each other in Binary diagrams the LEVER RULE is used. Using the lever rule one can determine quantitatively the relative composition of a mixture in a two-phase region in a phase diagram.

What is the lever rule in bridge design?

Lever rule – An approximate distribution factor method that assumes no transverse deck moment continuity at interior beams, rendering the transverse deck cross section statically determinate. The method uses direct equilibrium to determine the load distribution to a beam of interest.

What is phase diagram explain lever rule?

If an alloy consists of more than one phase, the amount of each phase present can be found by applying the lever rule to the phase diagram. The composition of the alloy is represented by the fulcrum, and the compositions of the two phases by the ends of a bar.

What is meat by eutectic point?

This point is called the eutectic. It is the lowest temperature at which a liquid can exist in this system. At the eutectic, both anorthite and titanite crystallize together at a fixed temperature and in a fixed ratio until the remaining liquid is consumed.

What is dynamic load allowance?

Abstract: Dynamic load allowance (DLA) is an important index used in design and evaluation of dynamic performance of highway bridges to moving vehicular loads. Key words: highway bridges, moving vehicular loads, vehicle-bridge interaction, dynamic load allowance, deflection, bending moment.

How is the lever rule used in chemistry?

The lever rule is a rule used to determine the mole fraction ( xi) or the mass fraction ( wi) of each phase of a binary equilibrium phase diagram. It can be used to determine the fraction of liquid and solid phases for a given binary composition and temperature that is between the liquidus and solidus line. In an alloy…

How is the lever rule used in compositional triangle?

Within each compositional triangle, we can use the lever rule to estimate the proportions of the phases that will occur in the rock. For example, a rock with composition x will have the same mineral assemblage as a rock with composition z, but rock z will have a much higher proportion of the mineral A.

What are the tie lines in metamorphic petrology?

The minerals XYZssand Zssshow a range of possible compositions that are represented by a shaded field on the diagram. The tie lines that connect the ranges for the solid solution compositions are just some of an infinite array of possible tie lines.