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Topic: Need help with a lab! (BakingSoda and HCl reaction in baggy)  (Read 4487 times)

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Offline AnnaJ

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Need help with a lab! (BakingSoda and HCl reaction in baggy)
« on: October 21, 2013, 10:54:48 PM »
I was assigned to recreate a "airbag" effect by using Cl and Baking soda. I have to fill a plastic bag perfectly with gas from the reaction. I used the ideal gas law to find the mole of the CO2, but now I'm not sure what to do! How do I get the grams of Baking soda and Cl? I'm so lost... :(
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Offline Hunter2

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Re: Need help with a lab! (BakingSoda and HCl reaction in baggy)
« Reply #1 on: October 22, 2013, 01:00:57 AM »
First get the chemical equation of the reaction of the baking soda and hydrohloric acid.

Second determine how many mole CO2 correspond to how many mole baking soda. Transfer your calculated mole of CO2 from the ideal gas law.

Third calculate the mass by using molar mass of baking soda.
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Offline AnnaJ

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Re: Need help with a lab! (BakingSoda and HCl reaction in baggy)
« Reply #2 on: October 22, 2013, 01:08:34 AM »
What about the HCl?
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Offline Hunter2

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Re: Need help with a lab! (BakingSoda and HCl reaction in baggy)
« Reply #3 on: October 22, 2013, 02:35:01 AM »
The HCl you calculate in the same way.

How many mol HCl correspond to the CO2 or Na2CO3

You get the mass. You have to check the percentage of the solution and can calculater via specific gravity the volume
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