Susmita Nayak posted an Question
January 03, 2021 • 01:05 am 30 points
  • IIT JAM
  • Geology (GG)

A hypothetical two component phase diagram contain with a and b as the end members. applying lever rule you find out the temperature just above the eutectic poi

A hypothetical two component phase diagram contain with A and B as the end members. applying lever rule you find out the temperature just above the eutectic point you have 0.69B and o.31 liquid E and temperature just below the eutectic you have 0.75B and o.25A . what will be the eutectic % of A in the eutectic composition?

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    Ankita sahoo Best Answer

    Before reaching Eutectic point only B was crystalized out and i.e 0.31That means in residual liquid 0.31, mineral A liquid is 0.25 and mineral B liquid is 0.31-0.25=0.06 And at Eutectic point both A0.25 & B0.06 crystalize out simultaneously. So, at Eutectic point % of A is, (0.25/0.31)×100= 80.64And %of B at Eutectic is, (0.06/0.31)×100= 19.36

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