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Wittaler [7]
3 years ago
11

What happens to the particles in dry ice when it subimes

Chemistry
1 answer:
Gala2k [10]3 years ago
6 0

Answer:

The particles in dry ice overcomes the force of attraction between them to change directly to gaseous state.

Explanation:

Matter exists in three states- solid, liquid and gas. When heated, solid changes to liquid and then gas. However, upon condensation, gas changes to liquid and then to solid. Some solids when heated change directly to vapour without an intermediate liquid state, such vapour will also condense to solid without going through the liquid state. Example includes: ammonium chloride, iodine crystals and sulphur. These solids undergo SUBLIMATION.

Dry ice which is also known as solid frozen carbon dioxide can undergo sublimation when subjected to -78°C. What actually happens to the particles ( molecules) of the frozen carbon dioxide is the existence of weak intermolecular forces between the molecules. Since the molecules are very weakly attracted to each other, frozen carbon dioxide molecules very readily go from the solid state to the gas state at low temperatures.

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For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCl₂):(b) Assuming that ΔS° and ΔH° change little wi
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The following is the relationship between  ΔG°,  ΔH, and  ΔS°:

ΔH-T ΔS = ΔG

where  ΔG represents the common Gibbs free energy.

the enthalpy change,  ΔH

The temperature in kelvin is T.

Entropy change is  ΔS.

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Using the formula, we obtain:

-220kJ/mol -T ΔS° = -206kJ/mol

220 kJ/mol +206 kJ/mol =T ΔS°.

-T ΔS = 14 kJ/mol

for ΔS-14/298

ΔS=0.047 kJ/mol.K

450K for the temperature Completing a formula with values

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ΔG° = -220 kJ/mol + 21.14 kJ/mol.

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7 0
2 years ago
What is the net ionic equation for the reaction<br> ofFeCl3 and KOH in water?
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Answer:

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Explanation:

First, we will write the molecular equation because it is the easiest to balance.

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The full ionic equation includes all the ions and the molecular species.

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The net ionic equation includes only the ions that participate in the reaction and the molecular species.

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andreyandreev [35.5K]

Answer:

H3PO4 is stronger than H2PO4- because

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7 0
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goldenfox [79]
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