4 years ago

What is the chemical formula for the ionic compound calcium chloride?

Chemistry

2 answers:

Juliette [100K]4 years ago

6 0

The answer to your question is,

B) CaCl2

-Mabel <3

forsale [732]4 years ago

3 0

B) is the accurate answer for the chemical formula

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What is the solubility (in g/L) of calcium fluoride at 25°C? The solubility product constant for calcium fluoride is 3.4 × 10–11

PilotLPTM [1.2K]

Answer: The correct answer is Option b.

Explanation:

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

$CaF_2\rightleftharpoons Ca^{2+}+2F^-$

s 2s

The expression for solubility constant for this reaction will be:

$K_{sp}=[Ca^{2+}][F^-]^2$

We are given:

$K_{sp}=3.4\times 10^{-11}$

Putting values in above equation, we get:

$3.4\times 10^{-11}=(s)\times (2s)^2\\\\3.4\times 10^{-11}=4s^3\\\\s=2.04\times 10^{-4}mol/L$

To calculate the solubility in g/L, we will multiply the calculated solubility with the molar mass of calcium fluoride:

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Multiplying the solubility product, we get:

$s=2.04\times 10^{-4}mol/L\times 78g/mol=159.12\times 10^{-4}g/L=0.015g/L$

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3 0

3 years ago

Which two of the following correctly describe a solution?

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Answer:

C and A

Explanation:

i think it is because a solution is a mix of a solute and solvent, dont judge me if its wrong

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