H2SO4 + 2NH4OH → (NH4)2SO4 + 2HOH Which of these would be the BEST description of this reaction? A) reduction B) combustion C) n
2 answers:
Answer: C) neutralization
Explanation:
A. Reduction is a type of chemical reaction in which substance is made to gain electrons or gain hydrogen.
Example:
B. Combustion is a type of chemical reaction in which fuel is reacted with oxygen to form carbon dioxide and water.
Example:
C. Neutralization reaction is defined as the chemical reaction in which an acid reacts with a base to produce a salt and water molecule.
D. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
Example:
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Answer:
A
Explanation:
Recall that Δ<em>H</em> is the sum of the heats of formation of the products minus the heat of formation of the reactants multiplied by their respective coefficients. That is:
Therefore, from the chemical equation, we have that:
Remember that the heat of formation of pure elements (e.g. H₂) are zero. Substitute in known values and solve for hydrazine:
In conclusion, our answer is A.