Balance: Fe + H₂O → Fe₃O₄ + H₂.
A3 Fe + 4 H₂O → 3 Fe₃O₄ + 4 H₂
B3 Fe + 4 H₂O → Fe₃O₄ + 4 H₂
C3 Fe + H₂O → Fe₃O₄ + H₂
DFe + 4 H₂O → Fe₃O₄ + 4 H₂
Answer & Solution
Correct answer: B. 3 Fe + 4 H₂O → Fe₃O₄ + 4 H₂
3 Fe on the left to match 3 in Fe₃O₄. 4 H₂O gives 4 O (match) and 8 H, balanced by 4 H₂ on the right.
Related questions
Clear limewater turns milky white when a gas is bubbled through it. Which gas was in the bMilk left standing for a few days tastes sour. Which process has produced that taste?During a chemical reaction, what happens to the atoms of the reactants?What do we call the substances that are present before a reaction takes place?What happens to the starting substances during a chemical reaction?A reducing agent in a redox reaction is the substance thatRespiration, in which glucose combines with oxygen to release energy, is best described asThe decomposition of water into hydrogen and oxygen on passing electric current is called