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4 years ago

Describe how you would prepare a supersaturated solution.

2 answers:

7 0

First, heat the solute to a high temperature, but not boiling. Next, dissolve the solute into the heated solution until the solute will no longer dissolve. Once that happens, take the heated solution off the heat and allow it to cool. Once the solution is cool you now have a supersaturated solution.

Anettt [7]4 years ago

7 0

Using a saturation curve, determine how much solute needs to be added to water to make the solution saturated. Then make sure to add more then the amount you found to make the solution supersaturated

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In an aqueous chloride solution cobalt(II) exists in equilibrium with the complex ion CoCl42-. Co2 (aq) is pink and CoCl42-(aq)

kolezko [41]

Answer:

1. This reaction is (A) Exothermic .

2. When the temperature is decreased the equilibrium constant, K: (A) Increases

3.When the temperature is decreased the equilibrium concentration of Co2: (A) Increases

Explanation:

$CoCl4^2-(aq) Co_2+(aq) + 4Cl^-(aq)$

1. The pink color predominates at low temperatures, indicating that the commodity is preferred.

This is a reaction that is exothermic.

2. As the decrease in the temperature , the equilibrium constant , K ;

equilibrium constant = $\frac{product}{reactant}$ = $\frac{[CO^2^+][Cl^-^4]}{CoCl^2^-_4}$

As the temperature drops, the concentration of $Cl^-$ and $CO^2^+$ rises, and K rises as well , thus it increases .

3. The equilibrium concentration of $CO^2^+$ decreases as the temperature decreases:

When the temperature is lowered, the equilibrium shifts to the right , that is it increases.

4 0

3 years ago

Two well-known complex ions containing ni are [ni(h2o)6]2+, which is green, and [ni(en)3]2+, which is purple. which one of these

Julli [10]

For [Ni(en)³]²⁺ which is purple, the crystal field splitting energy is greater than the complex ion, [Ni(H₂O)₆]²⁺ which is green in color.
When a Lewis base id attached to the metal ion by covalent bond, then the complex ion is formed and when these complex ions are present with other ions of opposite charge or neutral charge, they will make complex compounds.

7 0

3 years ago

What does this look like? Can someone write out the Stoichiometry starting with 50 grams of carbon (use balanced equation)

UNO [17]

That depends on what the reaction is. Do you have more info related to this problem?

3 0

3 years ago

Observations: Sodium hydroxide reacts with coper sulfate

vaieri [72.5K]

Answer:

copper sulphate reacts with sodium hrydroxide to form a blue preipitate of copper hrydroxide and soduim hrydroxide.

6 0

3 years ago

The Red Sea is widening at a rate of 1.25 centimeters per year. How many years will it take to widen another 812.5 centimeters?

nikklg [1K]

The correct answer is - B) 650.

The Red Sea is a sea that grows in size because it is widening all the time. The rate of the widening is 1.25 centimeters per year, so it is not something that can be easily seen during a normal human lifespan, but over a longer period of time it will have a much different shape, size, and influence in the region. It is located between the African and the Arabian tectonic plates as an elongated thin sea with a northwest-southeast direction.

The widening of the Red Sea is due to the movement of the tectonic plates. Africa is moving towards northwest, and that makes it slowly distance itself from the Arabian plate, thus opening more space for the Red Sea.

In order for the Red Sea to widen another 812.5 centimeters, will be required 650 years, and we can come to the result by simple dividing the required number of the width with the annual widening.

812.5 / 1.25 = 650.

6 0

3 years ago

Read 2 more answers