Ask Question
5 May, 04:51

A solution containing sodium fluoride is mixed with one containing calcium nitrate to form a solution that is 0.015M in NaF and 0.010M I. Ca (NO3) 2. Calculate the reaction quotient (Q) for the possible cross product CaF2, and compare Q to the solubility product constant of CaF2 to determine if a percipitate will form.

+5
Answers (1)
  1. 5 May, 04:55
    0
    According to the reaction equation:

    CaF2 (s) ⇄ Ca2 + (aq) + 2F - (aq)

    So the Q expression will be = [Ca2+][F-]^2

    and we will neglect the [ CaF2] as it is solid

    so, by substitution:

    when we have [Ca2+] = 0.01

    and [F-] = 0.015

    Q = 0.01 * (0.015) ^2

    = 6.3 x 10^-2

    by comparing Q value which is 6.3 x 10^-2 and Ksp value which is 1.8 x 10^-5

    So, we can see that Q > Ksp

    -that means precipitation will form as ion concentration are greater than

    equilibrium concentration So, the reaction will proceed in reverse to achieve

    equilibrium. and the solution will be then supersaturated.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A solution containing sodium fluoride is mixed with one containing calcium nitrate to form a solution that is 0.015M in NaF and 0.010M I. ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers