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2 years ago

A neutral atom has equal numbers of and electrons.

Chemistry

1 answer:

Illusion [34]2 years ago

6 0

True

true

true

true

true

true

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CdF2(s)⇄Cd2+(aq)+2F−(aq)A saturated aqueous solution of CdF2 is prepared. The equilibrium in the solution is represented above.

kupik [55]

Answer:

The correct answer is option a.

Explanation:

$CdF_2(s)\rightleftharpoons Cd^{2+}(aq)+2F^-(aq)$

Equilibrium concentration cadmium ions = $[Cd^{2+}]=0.0585 M$

Equilibrium concentration fluoride ions = $[F^{-}]=0.117 M$

Molar solubility is the maximum concentration of salt present in water in ionic form beyond that no more salt will exist in its ionic form and will settle down in bottom of the solution.

The molar solubility of the solid cadmium fluoride = 0.0585 M

$CdF_2(s)\rightleftharpoons Cd^{2+}(aq)+2F^-(aq)$ ..[1]

$NaF(s)\rightleftharpoons Na^{+}(aq)+F^-(aq)$

Due to addition of sodium fluoride will increase concentration of fluoride in the solution.And due to common ion effect the equilibrium will shift in backward direction in [1], that is precipitation of more cadmium fluoride.

Hence, decrease in solubility will be observed.

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2 years ago

What is an experiment?

OLEGan [10]

Answer:

a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

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3 years ago

Proteins are: amino acids. carbohydrates. minerals. sugars.

FinnZ [79.3K]

Proteins are Amino acids

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2 years ago

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How many molecules are present in 1 teaspoon of sucrose if its mass is 4.10g? show your work

frozen [14]

4.10 g C12H22O11 * ( 1 mol / 342.2965 g ) * ( 6.022x10^23 / 1 mol ) = 7.2107077x10^21 molecules = 7.21x10^21 molecules

Convert grams to moles using the molar mass ( g/mol ).

Use Avogadro's constant ( 6.022x10^23 ) to get the quantity of molecules from the amount of moles.

Revise answer to have the correct number of significant figures ( the smallest amount of digits in any number in the problem is the amount of significant figures your answer should have ).

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2 years ago

What happens when water changes from a solid to a liquid to a vapor

mote1985 [20]

Answer:

It forms a water cycle!

Hope it helps!!!

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3 years ago