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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: vyshnaviM on November 25, 2020, 06:28:15 PM

Title: balancing equation
Post by: vyshnaviM on November 25, 2020, 06:28:15 PM
Wood is composed mainly of the carbohydrates cellulose and lignin.  During the combustion of these compounds,  what are the two products formed?
Title: Re: balancing equation
Post by: Meter on November 25, 2020, 06:35:06 PM
Quote from: vyshnaviM on November 25, 2020, 06:28:15 PM
Wood is composed mainly of the carbohydrates cellulose and lignin.  During the combustion of these compounds,  what are the two products formed?
Good question. It's important to provide an attempted solution before expecting help, though. This is forum policy.
Title: Re: balancing equation
Post by: vyshnaviM on November 25, 2020, 06:58:58 PM
Using the combustion formula, the products I received were 6CO2+5H20 and 81CO2+46H20
I came to these answer by setting the chemical formulas for both equations to carbon-dioxide and water
Title: Re: balancing equation
Post by: AWK on November 26, 2020, 01:03:46 AM
What lignin formula did you use for your calculations?
Moreover, if you have presented the question correctly, you have to answer what are the products of combustion, not what are the stoichiometric reaction coefficients.
Title: Re: balancing equation
Post by: vyshnaviM on November 26, 2020, 02:32:51 PM
I tried to find products but I'm not sure how to find it. Could you guide me as to how I would find the products. I used this formula for lignin C81H92O28.
Title: Re: balancing equation
Post by: chenbeier on November 26, 2020, 02:45:45 PM
If you burn something containing 81 C, how much CO2 you can obtain. The same for 92 H, how much water.

I saw you had already the answer. But you have to write the educt on left side and add the right amount of oxygen.
Title: Re: balancing equation
Post by: Borek on November 28, 2020, 04:19:40 AM
Quote from: vyshnaviM on November 26, 2020, 02:32:51 PM
I tried to find products but I'm not sure how to find it. Could you guide me as to how I would find the products. I used this formula for lignin C81H92O28.

Lignin contains carbon - what products of carbon oxidation do you know?

Lignin contains hydrogen - what products of hydrogen oxidation do you know?