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3 years ago

Explique por qué se necesita una temperatura alta para derretir el yoduro de potasio.

Chemistry

1 answer:

SCORPION-xisa [38]3 years ago

7 0

Answer:

El yoduro de potasio es una sal cristalina de fórmula KI, usada en fotografía y tratamiento por radiación. Al ser menos higroscópica que el yoduro de sodio, es más utilizada como fuente de ion yoduro.

Explanation:Se porta como una sal simple. El ion yoduro, al ser un reductor débil, es fácilmente oxidado por otros elementos como el cloro para transformarse en yodo:

2 KI(ac) + Cl2(ac) → 2 KCl + I2(ac)

Tiene un pH neutro (pH = 7) ya que el catión potasio y el anión yoduro son iones espectadores, por lo que no reaccionan con el agua, manteniéndose inalterado el pH. El yoduro se oxida aún más fácilmente al formar ácido yodhídrico (HI), el cual es un reductor más fuerte que el KI. El yoduro de potasio forma el anión triyoduro(I3−) al combinarse con yodo elemental.

A diferencia del yodo, los triyoduros son altamente solubles en agua, por lo que el yoduro de potasio aumenta considerablemente la solubilidad del yodo elemental en agua, que por sí solo se disuelve en muy bajas cantidades.

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Which option is a mixture? A. potassium B. sugar C. water D. salad

PSYCHO15rus [73]

Answer:

D.Salad

Explanation:

A mixture is a substance that combines two or more substance that are physically combined. A mixture can be easily seperated by a physical means . A mixture is the combination of various substances that are not chemically combined .Examples of mixtures are cake and salad . The cake contains various substances like egg, flour and sugar. This mixture can be easily separated into it individual entities by a physical means .

Base on the option the only mixture among the option is salad . Salad is a a mixtures that combines substances like tomatoes , fruits and vegetable. The individual substances that makes up the salad can be easily separated.

Sugar is a compound . Water is a compound as it contains two elements and potassium is an element.

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3 years ago

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Distinguish a substance from a mixture. give two examples of each

amm1812

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3 years ago

Identify the substances in this reaction:

lukranit [14]

Answer:

is an aqueous reactant

is a liquid product

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Explanation:

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3 years ago

What volume in L of a 0.724 M Nal solution contains 0.405 mol of Nal?

Setler [38]

Answer:

0.559 L

Explanation:

Step 1: Given data

Moles of sodium iodide (n): 0.405 mol

Molar concentration of sodium iodide (M): 0.724 M (0.724 mol/L)

Step 2: Calculate the volume of solution (V)

The molarity is equal to the moles of solute divided by the liters of solution.

M = n/V

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3 years ago

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Explique por qué se necesita una temperatura alta para derretir el yoduro de potasio.​

Explique por qué se necesita una temperatura alta para derretir el yoduro de potasio.