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Equilibrium

Question
CBSEENCH11008232
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MY and NY3, two nearly insoluble salts. have the same Ksp values of 6.2 x 10-13 at room temperature. Which  statement would be true in regard to MY and NY3 ?

  • The molar solubility of MY in water is less than that of NY3

  • The salts MY and NY3 are more soluble in 0.5 M KY than in pure water

  • The addition of the Salt of KY to the solution of MY and NY3 will have no effect on their solubilities.

  • The molar solubilities of MY and NY3 in water identical.

Solution

A.

The molar solubility of MY in water is less than that of NY3

For MY,
MY with 0 below space leftwards harpoon over rightwards harpoon space straight M subscript straight s superscript plus space plus straight Y subscript straight s superscript minus Where comma space straight s equals space solubility space and space straight K subscript sp space equals solubility space product therefore space straight K subscript sp space equals straight s squared straight s equals square root of straight K subscript sp end root space equals space square root of 6.2 space straight x space 10 to the power of negative 13 end exponent end root space equals space 7.874 space straight x space 10 to the power of negative 7 end exponent simiarly comma space for space NY subscript 3 stack NY subscript 3 with 0 below space leftwards harpoon over rightwards harpoon stack space straight N subscript space superscript plus with straight s below space plus stack 3 straight Y to the power of minus with 3 straight s below space equals straight s space straight x space left parenthesis 3 straight s right parenthesis squared straight K subscript sp space equals 27 space straight s to the power of 4 straight s space equals space 4 square root of straight K subscript sp over 27 end root space equals space 4 square root of fraction numerator 6.2 space straight x space 10 to the power of negative 13 end exponent over denominator 27 end fraction end root space equals 3.89 space straight x space 10 to the power of negative 4 end exponent Therefore comma space molar space solubility space of space MY space in space water space is space less space than space that space of space NY subscript 3

Some More Questions From Equilibrium Chapter

What kind of molecules in a liquid can evaporate?

Name the factors on which vapour pressure of any liquid depends.

Which measurable property becomes constant in water vapour equilibrium?

Give an example from daily life in which there is gas solution equilibrium?

A crystal of common salt of a given mass is kept in its aqueous solution. After 24 hours, its mass remains the same. Is the crystal in equilibrium with the solution?

What is the role of forward and backward reactions at equilibrium of a reversible reaction?

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