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sergij07 [2.7K]
3 years ago
5

What is the mole ratio of PCl3 to PCl5?

Chemistry
2 answers:
Ray Of Light [21]3 years ago
8 0
It 1:1 I had an online review and thats the answer it told me it was.
-Hope this helped you
bekas [8.4K]3 years ago
5 0

Answer : The mole ratio of PCl_3 to PCl_5 is 1 : 1 ratio.

Explanation :

The balanced reaction will be,

PCl_3+Cl_2\rightarrow PCl_5

From the balanced reaction, we conclude that

1 mole of PCl_3 react with the 1 mole of Cl_2 to give 1 mole of PCl_5

Hence, the mole ratio of PCl_3 to PCl_5 is 1 : 1 ratio.

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The smallest participle of an element is called an atom
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Which type of bond is present in hydrogen sulfide (H2S)? The table of electronegativities is given.
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nonpolar covalent bond (with LD force)

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A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4
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y-y.......................3y...........y

3y = 1.2
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0,4-0,4..............1,2..........0,4
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5 0
3 years ago
Ca(OH)2 (s) precipitates when a 1.0 g sample of CaC2(s) is added to 1.0 L of distilled water at room temperature. If a 0.064 g s
Nina [5.8K]

Answer:

D) Ca(OH)₂ will not precipitate because Q <  Ksp

Explanation:

Here we have first a chemical reaction in which Ca(OH)₂  is produced:

CaC₂(s)  + H₂O ⇒ Ca(OH)₂ + C₂H₂

Ca(OH)₂  is slightly soluble, and depending on its concentration it may precipitate out of solution.

The solubility product  constant for Ca(OH)₂  is:

Ca(OH)₂(s) ⇆ Ca²⁺(aq) + 2OH⁻(aq)

Ksp = [Ca²⁺][OH⁻]²

and the reaction quotient Q:

Q = [Ca²⁺][OH⁻]²

So by comparing Q with Ksp we will be able to determine if a precipitate will form.

From the stoichiometry of the reaction we know the number of moles of hydroxide produced, and since the volume is 1 L the molarity will also be known.

mol Ca(OH)₂ = mol CaC₂( reacted = 0.064 g / 64 g/mol = 0.001 mol Ca(OH)₂

the concentration of ions will be:

[Ca²⁺ ] = 0.001 mol / L 0.001 M

[OH⁻] = 2 x 0.001 M  = 0.002 M  ( From the coefficient 2 in the equilibrium)

Now we can calculate the reaction quotient.

Q=  [Ca²⁺][OH⁻]² = 0.001 x (0.002)² = 4.0 x 10⁻⁹

Q < Ksp since 4.0 x 10⁻⁹ < 8.0 x 10⁻⁸

Therefore no precipitate will form.

The answer that matches is option D

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