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how do i write a double replacement reaction (balanced) between sulfuric acid and...
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High School Teacher
A double replacement reaction takes place between two ionic compounds, and follows this pattern:
`(A^+ B^-) + (C^+ D^-) -> (A^+ D^-) + (C^+ B^-)`
The ionic compounds are just trading "partners", so to speak.
Sulfuric acid has the formula `H_2 SO_4`
It is composed of two Hydrogen ions, with a total charge of +2, and one sulfate ion, with a charge of -2.
Magnesium hydroxide has the formula `Mg(OH)_2`
It is composed of one Magnesium ion, with a total charge of +2, and two hydroxide ions, each with a charge of -1.
`(H_2^+2)(SO_4^-2) + (Mg^+2)(OH)_2^-2`
`(H_2^+2)(OH)_2^-2) + (Mg^+2)(SO_4^-2)`
which gives us
`H_2(OH)_2 + MgSO_4`
The hydrogen-hydroxide compound has a formula of
which simplifies to
So, the complete reaction is:
`H_2SO_4 + Mg(OH)_2 -> MgSO_4 + 2H_2O`
Posted by caledon on November 8, 2013 at 3:48 AM (Answer #1)
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