Pizza Roll's

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Clara Cho 2K
Posts: 103
Joined: Wed Sep 18, 2019 12:18 am

Pizza Roll's

Postby Clara Cho 2K » Wed Feb 12, 2020 2:44 pm

Can some one explain to me #12b from the pizza rolls packet? How do I divide the process up into three steps?

JChen_2I
Posts: 107
Joined: Fri Aug 09, 2019 12:17 am

Re: Pizza Roll's

Postby JChen_2I » Wed Feb 12, 2020 3:04 pm

Step one is raising the temperature of the reactants to 200C. Step 2 is the actual reaction at 200C (deltaH is given). Step 3 is cooling the products back down to 37C. Add all these values together to get the total change in enthalpy of the reaction.

Sydney Pell 2E
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

Re: Pizza Roll's

Postby Sydney Pell 2E » Wed Feb 12, 2020 5:18 pm

JChen_2I wrote:Step one is raising the temperature of the reactants to 200C. Step 2 is the actual reaction at 200C (deltaH is given). Step 3 is cooling the products back down to 37C. Add all these values together to get the total change in enthalpy of the reaction.


What equations would you use to raise the temperature of the reactants to 200C and cool them back down?

Ashley Fang 2G
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

Re: Pizza Roll's

Postby Ashley Fang 2G » Tue Feb 18, 2020 12:06 pm

You would use delta H = nC(delta T) for each of the reactants or products.


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