Homework Help: chemistry

Posted by Kenzie on Wednesday, April 11, 2012 at 5:01pm.

At room temperature (about 20C) milk turns sour in about 64 hours. In a refrigerator at 3C, milk can be stored for about three times as long before turning sour. (i) Determine the approximate activation energy for the reaction that causes milk to sour, and (ii) estimate how long it would take for milk to sour at 37C.

chemistry - DrBob222, Wednesday, April 11, 2012 at 5:51pm
Use the Arrhenius equation and solve for Ea. You might use for k something like 1 L sours/64 hours etc.

Use the same equation again but change the T to 37. Post your work if you get stuck.
chemistry - Kenzie, Wednesday, April 11, 2012 at 9:58pm
I guess I just don't know what value to use for A in the Arrhenius equation.
chemistry - DrBob222, Wednesday, April 11, 2012 at 10:19pm
Usually when one doesn't know the value of A we substitute 1 for it. These are estimates anyway.

Answer this Question

Related Questions

chemistry - 1)At room temperature (20 degree C), milk turns sour in about 64 ...
Calculas HS - A glass of cold milk from the refrigerator is left on the counter ...
Calculas HS - A glass of cold milk from the refrigerator is left on the counter ...
chemical question - a) Sour milk pancakes do not taste sour when sour milk and ...
science - as 390 g of hot milk cools in a mug, it transfers 30,000 J of heat to...
Microeconomics - The invention of a machine that increases milk production is ...
Organic Chemistry Lab - Hi! For an orgo lab we had to isolate the following from...
guidance and discipline - An appropriate related consequence for spilling milk ...
physics - a banana with a temperature of 17 degrees C (specific heat of banana= ...
Math - Jared and 5 friends wanted to make mac and cheese for lunch. they decided...

For Further Reading

First Name:
School Subject:
Answer: