Based on the reaction shown which statement is true?S + O2 --> SO2     (delta)H = -70.8kcalA) 70.8kcal are produced when 1g of oxygen reacts with 1g of sulfurB) 70.8kcal are produced when 16g of oxygen reacts with 32.1g of sulfurC) 70.8kcal are produced when 32g of oxygen reacts with 32.1g of sulfurD) 70.8kcal are produced when 32g of oxygen reacts with 1g of sulfur

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Asked Nov 25, 2019
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Based on the reaction shown which statement is true?

S + O2 --> SO2     (delta)H = -70.8kcal

A) 70.8kcal are produced when 1g of oxygen reacts with 1g of sulfur

B) 70.8kcal are produced when 16g of oxygen reacts with 32.1g of sulfur

C) 70.8kcal are produced when 32g of oxygen reacts with 32.1g of sulfur

D) 70.8kcal are produced when 32g of oxygen reacts with 1g of sulfur

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Expert Answer

Step 1

The balanced chemical equation for the given reaction between the sulfur atom and dioxygen is shown in equation (1) where ΔH is the enthalpy change for the given reaction and it is equal to -70.8 kcal.

->so, AH =-70.8 kcal.
SO2 AH = -70.8 kcal ... (1)
S+02
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->so, AH =-70.8 kcal. SO2 AH = -70.8 kcal ... (1) S+02

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Step 2

According to the chemical equation (1), one mole of O2 and one mole of sulfur are required to form one mole of sulfur dioxide.

Step 3

The molar mass for sulfur is 32.1 g/mol and the molar mass for O2 is 32 g/mol. Thus, -70....

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