Multiple Choice
Which of the following best describes the reaction: 2 H_2S(g) + 3 O_2(g) → 2 H_2O(g) + 2 SO_2(g)?
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3. Chemical Reactions
Balancing Chemical Equations
Multiple Choice
Consider the reaction: 2Al(OH)3 + 3H2SO4 \(\rightarrow\) x + 6y. What are the correct formulas for x and y?
A
x = Al2O3, y = H2SO4
B
x = Al2(SO4)3, y = SO3
C
x = Al(OH)3, y = SO2
D
x = Al2(SO4)3, y = H2O
Verified step by step guidance1
Identify the reactants and products in the given reaction: 2Al(OH)3 + 3H2SO4 \(\rightarrow\) x + 6y. Here, Al(OH)3 is aluminum hydroxide and H2SO4 is sulfuric acid.
Recognize that this is an acid-base reaction where aluminum hydroxide (a base) reacts with sulfuric acid to form a salt and water.
Determine the salt formed by combining the aluminum ion (Al^{3+}) with the sulfate ion (SO4^{2-}). Since aluminum has a +3 charge and sulfate has a -2 charge, the formula for the salt is Al2(SO4)3 to balance the charges.
Identify the other product as water (H2O), which forms from the neutralization of hydroxide ions (OH^-) and hydrogen ions (H^+) from the acid.
Write the balanced chemical equation with the correct formulas: 2Al(OH)3 + 3H2SO4 \(\rightarrow\) Al2(SO4)3 + 6H2O, confirming that x = Al2(SO4)3 and y = H2O.
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