Calculate the Heat Released (KJ) in the Reaction of 3 $\rarr$

question 99

Multiple Choice

Calculate the heat released (kJ) in the reaction of 3.50 g of acetylene (C₂H₂) and excess hydrogen gas to form ethane gas: C₂H₂(g) + 2H₂(g) $\rarr$ C₂H₆(g)
Given:
2C₂H₂(g) + 5O₂(g) $\rarr$ 4CO₂(g) + 2H₂O(g) $\Delta$ H = -2320 kJ/mol
2C₂H₆(g) + 7O₂(g) $\rarr$ 4CO₂(g) + 6H₂O(g) $\Delta$ H = -3040 kJ/mol
2H₂(g) + O₂(g) $\rarr$ 2H₂O(g) $\Delta$ H = -572 kJ/mol

• A) 27.5 kJ
• B) 28.5 kJ
• C) 29.5 kJ
• D) 30.5 kJ
• E) None of the above

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Definitions:

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The set of outcomes that lead to the rejection of the null hypothesis during hypothesis testing.

Confidence Interval

A range of values derived from sample statistics that is likely to contain the value of an unknown population parameter.

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