chemistry/stoichiometry/balancing/ How to BalanceZn + H2O = Zn(OH)2 + H2

How to Balance Zinc + Water → Zinc hydroxide + Hydrogen gas

How to Balance: Zn + H2O → Zn(OH)2 + H2

Type of Chemical Reaction: This is a single displacement reaction.

Word Equation: Zinc + Water → Zinc hydroxide + Hydrogen gas

Balancing Strategies: In this reaction of zinc plus water, we have a single displacement reaction. The reaction doesn't happen in cold water. The water has to be very hot or even steam.

The key to balancing this equation is correctly counting the number of hydrogen atoms on the product side of the equation.
For a complete explanation, watch:

About Balancing Chemical Equations

When balancing chemical equations our goal is to have the same number of each type of atom on both sides of the equation.

Only change the coefficients (these are the numbers in front substances).
Coefficients are the numbers in front of the molecule.
Never change the subscripts (the small numbers after elements).
Coefficients are the numbers in front of the molecule.

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