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terrellsmith84
10.04.2021 •
Chemistry
Part 2. Balance the following chemical equations (Show your work)
1. ¬__Fe + __H2S04 →__Fe2(SO4)3 + __H2
2. __ C2H6 + __O2 → ___H2O + __CO2
3. __KOH + __H3PO4 → __K3PO4 + __H2O
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Ответ:
2K +F₂→ 2KF
Explanation:
When we balance an equation, we are trying to ensure that the number of atoms of each element is the same on both sides of the arrow.
On the left side of the arrow, there is 1 K atom and 2 F atoms. On the right, there is 1 K and 1 F atom.
Since the number of K atoms is currently balanced, balance the number of F atoms.
K +F₂→ 2KF
Now, that the number of F atoms is balanced on both sides, check if the number of K atoms are balanced.
Left
K atoms: 1
F atoms: 2
Right
K atoms: 2
F atoms: 2
The number of K atoms is not balanced.
2K +F₂→ 2KF
Left
K atoms: 2
F atoms: 2
Right
K atoms: 2
F atoms: 2
The equation is now balanced.