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20 October, 02:08

Write the balanced equation for each of the following changes and identify whether heat is a product or needed to start the reaction (do not include heat in your balanced equation, simply identify whether it is a product or reactant)

a. The sublimation of dry ice (conversion of CO2 (s) directly to CO2 (g))

b. The reaction of 1 mol of sulfur dioxide with oxygen

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  1. 20 October, 02:13
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    a. The sublimation of dry ice (conversion of CO2 (s) directly to CO2 (g)

    CO2 (s) - -> CO2 (g)

    Sublimation of dry ice is endothermic because when dry ice undergoes sublimation, the result is extremely cold which means all of the temperature from the surroundings are being pulled into the substance. This means Heat is a reactant.

    b. The reaction of 1 mol of sulfur dioxide with oxygen

    SO2 + 1/2 O2 - -> SO3

    The reaction is exothermic. This means heat is a product.
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