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Troyanec [42]
3 years ago
10

Crown ethers are used to complex ionic compounds (or metal ions) because the oxygen in the crown ether will complex readily with

a positively charged metal cation.
a. True
b. False
Chemistry
1 answer:
Yuki888 [10]3 years ago
5 0

Answer:

True

Explanation:

Crown ethers are macrocyclic Organic compounds having oxygen atoms inside a chian of carbon atoms.

Crown ethers are of great importance in coordination chemistry because, the lone pairs on oxygen atoms could coordinate metal ions thereby sequestering them from aqueous solutions.

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<u>Answer:</u> The concentration of Ag^+ ion in the solution is 4.9\times 10^{-11}M

<u>Explanation:</u>

The balanced equilibrium reaction for the ionization of calcium fluoride follows:

AgBr\rightleftharpoons Ag^{+}+Br^-

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The expression for solubility constant for this reaction will be:

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We are given:

K_{sp}=4.9\times 10^{-13}

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Putting values in above equation, we get:

4.9\times 10^{-13}=(s)\times 0.01

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Hence, the concentration of Ag^+ ion in the solution is 4.9\times 10^{-11}M

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