Chemistry Temperature Problem

In summary, the problem involves calculating the final temperature of a mixture of ice and water with given heat capacities and enthalpy of fusion. The answer is 52.4 degrees Celsius, but the method to obtain it is uncertain. The assumption of no heat loss means that the heat transferred to the surroundings can be disregarded. An equation associated with phase changes is latent heat.
  • #1
Forceofmatter
2
0
1. Homework Statement [/b]

A 20.0 g sample of ice at -10.0 degrees Celsius is mixed with 100.0 g of water at 80.0 degrees Celsius. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H20 (solid) and H20 (liquid) are 2.08 J/g deg. Celsius and 4.18 J/g deg. Celsius respectively, and the enthalpy of fusion of ice is 6.01 kJ/mol.

The answer is 52.4 deg. Celsius. But I am unsure of how to get the answer. Please help asap. No heat loss means no heat (J) is lost to the environment, so you can basically ignore that part of the question.

2. Homework Equations
q=mc delta T
phase change formulas: there are none. Have to use a heating curve to change from solid to liquid and so on.

c=specific heat
q=heat in Joules
T=temperature in this case celsius
 
Last edited:
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  • #2
How about an equation associated with phase changes?
What's the implication of the assumption of "no heat loss"?
 
  • #3
Forceofmatter said:
phase change formulas: there are none.

Latent heat.
 

What is the chemistry temperature problem?

The chemistry temperature problem refers to the challenge of accurately measuring and controlling temperature in chemical reactions and processes. Temperature is a critical factor in many chemical reactions, and slight variations can greatly affect the outcome of the reaction.

What are the common methods used to measure temperature in chemistry?

The most common methods used to measure temperature in chemistry include thermometers, thermocouples, and infrared sensors. These devices can provide accurate readings of temperature in various environments, such as in liquids, gases, and solids.

Why is it important to maintain a specific temperature in chemical reactions?

Maintaining a specific temperature is crucial in chemical reactions because it directly affects the rate and outcome of the reaction. Temperature can influence the speed of the reaction, the products formed, and the quality of the final product. In some cases, even a slight change in temperature can result in a completely different reaction or product.

What are some common challenges when dealing with temperature in chemistry?

Some common challenges when dealing with temperature in chemistry include variations in temperature across a reaction vessel, heat loss to the environment, and the need to maintain a constant temperature over a long period of time. These challenges can lead to inaccurate readings and affect the overall success of the reaction.

How can the temperature problem in chemistry be addressed?

The temperature problem in chemistry can be addressed by using precise and reliable temperature measuring devices, such as digital thermometers and data loggers. It is also important to insulate reaction vessels and use temperature control methods, such as water baths or heating mantles, to maintain a consistent temperature. Proper planning and monitoring of temperature throughout the reaction can also help address any temperature-related issues.

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