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Chemistry 9 Online
OpenStudy (anonymous):

How can I balance the following? ___Cu(OH)2 + ____K2SO4 = ___KOH + ____CuSO4

OpenStudy (mathstudent55):

\( \_\_\_ Cu(OH)_2 + \_\_\_K_2SO_4 = \_\_\_KOH + \_\_\_CuSO_4\) Look at Cu. There is 1 atom on each side, so it's balanced. Now look at \(O\). There are 2 atoms in \((OH)_2\) plus 4 atoms in \(K_2SO_4\) on the left side. That is 6 atoms on the left side. We need 6 atoms on the right side. The right side has 1 \(O\) atom in \(KOH\) plus 4 more \(O\) atoms in \(CuSO_4\) for a total of 5. If we have 2 molecules of \(KOH\), we'll have the extra atom of \(O\) we need on the right side. \( \_\_\_ Cu(OH)_2 + \_\_\_K_2SO_4 = \color{red}{2}KOH + \_\_\_CuSO_4\)

OpenStudy (mathstudent55):

Now we start checking again. Cu is still balanced with one atom on each side. We have 2 O + 4 O on the left side and 2 O + 4 O on the right side. We have 2 H on the left side and 2 H on the right side. There are 2 K on the left and 2 K on the right. Finally there is 1 S on the left and 1 S on the right. The equation is balanced.

OpenStudy (anonymous):

I see, so would it be 1 Cu(OH)2 + 1K2SO3 = 2KOH + 1CuSO4?

OpenStudy (mathstudent55):

Don't write 1's. Just like in algebra we write simply x, not 1x, if the multiplier is 1, just leave it out.

OpenStudy (anonymous):

Oh okay, thank you very much, your explanation was incredibly helpful :)

OpenStudy (anonymous):

Wait, would this be a double replacement type of equation ?

OpenStudy (mathstudent55):

I think so.

OpenStudy (anonymous):

I'm truly not sure. I am very bad at determining which reactions are which when I don't see them.

OpenStudy (anonymous):

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