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Topic: help needed for balancing equation  (Read 5296 times)

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Offline theeeguy

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help needed for balancing equation
« on: November 07, 2006, 05:48:10 PM »
 At elevated temperatures, solid lead(II) nitrate decomposes to form solid lead(II) oxide,  oxygen gas and gaseous nitrogen dioxide. The decomposition absorbs 292 kJ of energy per mole of lead(II) nitrate decomposed.
        Write the balanced equation for the reaction including the energy term in the equation.

i just can't seem to balance it, any help or tips would be greatly appreciated   
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Offline Albert

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Re: help needed for balancing equation
« Reply #1 on: November 07, 2006, 05:54:02 PM »
Why don't you post what you think the chemical equation could be?
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Offline theeeguy

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Re: help needed for balancing equation
« Reply #2 on: November 07, 2006, 06:06:08 PM »
i really don't know

i think the equation is

Pb(NO3)2-------->PbO2 + O2 + NO2

it's just when i try to balance oxygen and nitrogen i come up with some astronomical numbers.  i know im forgetting something.
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Offline Borek

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Re: help needed for balancing equation
« Reply #3 on: November 07, 2006, 06:31:29 PM »
What is formula of lead (II) oxide?
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Offline theeeguy

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Re: help needed for balancing equation
« Reply #4 on: November 07, 2006, 07:11:00 PM »
Quote from: Borek on November 07, 2006, 06:31:29 PM
What is formula of lead (II) oxide?

PbO
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Offline Borek

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Re: help needed for balancing equation
« Reply #5 on: November 07, 2006, 07:13:48 PM »
So try to balance the equation with PbO, not with PbO2 ;)
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