All categories

3 years ago

Why is a high temperature needed to melt potassium iodide?

Chemistry

2 answers:

castortr0y [4]3 years ago

6 0

Explanation:

Potassium Iodide -

It is a salt , which is made of the ions of potassium and iodine ,

Potassium being the cation , and iodide being the anion .

The ions of this salt are held by strong ionic forces , which hold the ions together very strongly .

Hence , a lot of energy is required to melt the salt , as the bond between the ions is very strong .

Hence , the melting point of this salt , i.e. , Potassium Iodide , is very strong .

goldfiish [28.3K]3 years ago

4 0

Potassium Iodide have a lot of strong bonds which requires a very high temperature (high energy) to break them and change into a different state of matter.

You might be interested in

If we reverse the reaction to read Z + W -> X + Y, the +deltaH would be a -delta H. Does this indicate that heat is given off

Gre4nikov [31]

Answer:

In this reaction heat is released

Explanation:

Exothemic Reactions : Those reactions in which heat is released when the products are formed .

For such reaction The enthalpy change is negative.

$\Delta H= -$ for exothermic reaction

Endothermic Reactions : Those reaction which proceed by absorbing heat . Here heat is absorbed. The enthalpy change for such reactions is positive.

$\Delta H= +$

When the direction of reaction reverses , the value of H also changes.

In the given reaction,

$X + Y\rightarrow Z +Q$

$\Delta H= +$ = heat is absorbed

So,

$Z+Q\rightarrow X+Y$

$\Delta H= -$ = heat is released

Exothermic reactions are more spontaneous as compared to endothermic ractions. This means that they proceed own their own . Only little amount of energy is supplied to exothermic reaction to produce the prodct.

5 0

2 years ago

URGENT A gas occupies a volume of 2.4 L at 0.14 ATM. What volume will the gas occupy at 0.84 ATM ?

alisha [4.7K]

Answer:

c 0.40 L

Explanation:

Calculate by using Boyle's Law P₁V₁=P₂V₂

(0.14atm)(2.4L) = (0.84atm)(V₂)

0.336 atmL = (0.84atm)(V₂)

V₂ = 0.336 atmL/0.84atm

V₂ = 0.4 L

6 0

2 years ago

What’s the difference in kinetic energy of solids, liquids, and gases.

k0ka [10]

Answer:

Solids have the lowest kinetic energy so vibrate very little. Liquids have more kinetic energy so particles slide past each other. Gases have the most kinetic energy so fly around in the air

Explanation:

Brainliest much appricated

Have a good day!

4 0

2 years ago

HELPP ME ASAP What is the percent composition of Nitrogen in dinitrogen trioxide?

Arte-miy333 [17]

28% is the answer i got

7 0

2 years ago

How many particles are in 2.0 moles of CH4

Whitepunk [10]

Answer: There are 4.8 x 1024 hydrogen atoms in 2.0 moles of CH4

6 0

2 years ago

Read 2 more answers