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Why did ice as well as dry ice melt faster in water then air?

Rajnish Kaushik
in Inorganic Chemistry

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i have tried putting a cube of ice in water and one in air and found that ice melts faster and the same with the dry ice

so i am confused about it can someone help me?

i have tried putting a cube of ice in water and one in air and found that ice melts faster and the same with the dry ice

so i am confused about it can someone help me?

 

 

Stick your hand in room temp water, how does it feel compared to the air in the room?

Edited by Moontanman

water is colder then the air but how does that gives me the answer ?

 

 

Give it some thought, why does the water feel colder?

  • Author

 

 

Give it some thought, why does the water feel colder?

because it is at lower temp then air

because it is at lower temp then air

 

 

No, both should have been the same temp...

Think about why water cooling is better to keep an engine at a specific temp than air cooling...

  • Author

Think about why water cooling is better to keep an engine at a specific temp than air cooling...

bro but my question was about the ice and dry ice

bro but my question was about the ice and dry ice

 

 

The principle is the same...

  • Author

 

!

Moderator Note

Could you please stop calling people bro? It's not really against the rules, but damn is it annoying.

but they didnt have any problem and if they then they can say me directly :(

It's an out dated American idiom, he trying to curry favor, tongue.png

There is a better transfer of energy from the warm water to the cold ice cube than there is from the warm air to the cold ice cube.

There is a better transfer of energy from the warm water to the cold ice cube than there is from the warm air to the cold ice cube.

 

 

Don't do it for him... tongue.png

  • Author

There is a better transfer of energy from the warm water to the cold ice cube than there is from the warm air to the cold ice cube.

what if water is coller but still ice melt faster

i have tried putting a cube of ice in water and one in air and found that ice melts faster and the same with the dry ice

so i am confused about it can someone help me?

 

1 cm^3 of air has ~2.68*10^19 molecules at 0 C, s.p.

1 cm^3 of water has ~3.345*10^22 molecules of H2O.

 

Collisions between cold object molecules and water molecules are more probable than collisions with rare oxygen & nitrogen molecules.

 

In thermic cups and thermoses there is even used layer of vacuum, to separate hot/cold content from environment.

Edited by Sensei

Think of it this way. When you melt an ice cube, what is happining. Do you think water might have any properties that make it easyier for the ice to melt in it then in air.

The relevant parameters are the heat capacity, the mass and the temperature. Q = mC [math]\Delta T[/math]

 

m is the mass, C is the specific heat

 

The water may have a smaller temperature difference, but there's a lot more of it, and water has the ability to absorb more heat per unit mass for a given temperature increase.

 

For the record, I also find it annoying being referred to as Bromine Oxide.

  • Author

haha, sorry I was getting frustrated. I think Rajnish may be a troll mellow.png

bro what problem u have with me ? :(

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