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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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darwood darwood
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11 years ago
What is the balance chemical reaction when Iron displaces hydrogen from hydrochloric acid with iron (III) chloride and hydrogen gas as products? And can anyone explain me how you figured it out? because I really do not get it... (if not, don't worry)
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#1
11 years ago
2Fe  +  6HCl  ==>  2FeCl3  +  3H2

Steps:
Fe  +  HCl  ==>  FeCl3  +  H2
Write the reactants and products.  Remember that hydrogen gas is diatomic.

Look at the subscipts on Cl and H, 3 &2.  What is the first number, least common multiple, that the have in common?  6.
Fe  +  HCl  ==>  2FeCl3  +  3H2
Use cofficients to get the number of Cl and H to 6.

Fe  +  6HCl  ==>  2FeCl3  +  3H2
Use a cofficient to get 6 H and 6 Cl on the reactant side.

2Fe  +  6HCl  ==>  2FeCl3  +  3H2
Place a two in front of Fe to balance the 2Fe on the product side.
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