CBSE Class 11-science Answered

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Asked by brijk456 | 02 Sep, 2019, 11:58: PM

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Relation between Depression in freezing point is expressed as-

triangle straight T subscript straight f equals straight m cross times straight k subscript straight f where space triangle straight T subscript straight F space equals space Depression space in space freezing space point straight m equals space Molality straight k subscript straight f equals Van apostrophe straight t space hoff space factor Molality equals fraction numerator Number space of space moles space of space solute cross times 1000 over denominator Mass space of space solvent space in space gram end fraction Number space of space moles space of space solute equals fraction numerator Mass space of space Glucose over denominator Molar space mass space of space Glucose end fraction Let space the space mass space of space solvent space be space 100 straight g Then space 10 percent sign space solution space of space glucose space means space 10 space gram space of space glucose space in space 100 space gram space of space water Molality equals fraction numerator 10 cross times 1000 over denominator 180 cross times 100 end fraction When space 3 percent sign space Solution space is space given Molality equals fraction numerator 3 cross times 1000 over denominator 180 cross times 100 end fraction When space 2 percent sign space Solution space is space given Molallity equals fraction numerator 2 cross times 1000 over denominator 180 cross times 100 end fraction Whn space 1 percent sign space Solution space is space given Molality equals fraction numerator 1 cross times 1000 over denominator 180 cross times 100 end fraction triangle straight T subscript straight f space left parenthesis Depression space in space freezing space pont right parenthesis space is space directly space proportional space to space molality. Order space of space Molality 1 percent sign less than 2 percent sign less than 3 percent sign less than 10 percent sign Order space of space Depression space freezing space point 1 percent sign less than 2 percent sign less than 3 percent sign less than 10 percent sign If space Depression space in space freezing space point space is space more space then space Freezing space point space will space be space less So space order space of space Freezing space point 1 percent sign greater than 2 percent sign greater than 3 percent sign greater than 10 percent sign

Answered by Ravi | 03 Sep, 2019, 01:09: PM

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CBSE Class 11-science Answered

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