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Chemistry 19 Online
OpenStudy (dtan5457):

What's a good way to balance equations? A good method?

OpenStudy (dtan5457):

\[Ca(OH)_2+(NH4)_2SO_4\rightarrow CaSO_4+NH3+H_2O\]

OpenStudy (dtan5457):

@Jhannybean

OpenStudy (dtan5457):

@Kainui

OpenStudy (dtan5457):

@ganeshie8

OpenStudy (jhannybean):

Take your most complicated compound that appears on either side of the equation and make sure all the components in it are fully balanced on both sides of the equation. So first you'd want t analyze \(\sf (NH_4)_2SO_4\)

OpenStudy (dtan5457):

Different elements for both

OpenStudy (dtan5457):

should i write out exactly how many there are like 2 nitrogens, 8 hydrogens, 4 sulfur, 4 oxygen? will that help?

OpenStudy (jhannybean):

Yeah if you're not fast at recognizing your polyatomics that would be great practice to start with.

OpenStudy (dtan5457):

ok, then i should analyze CaSo4?

OpenStudy (dtan5457):

so CaSo4 has the same amount of sulfur and oxygen

OpenStudy (dtan5457):

as the other compound

OpenStudy (jhannybean):

Yeah, you have the same amount of sulfates on either side, no need to worry, same thing with calcium

OpenStudy (jhannybean):

So how would you get 2 nitrogens on the right side?

OpenStudy (dtan5457):

2(NH3)

OpenStudy (jhannybean):

\[\sf Ca(OH)_2 + (NH_4)_2SO_4 \longrightarrow CaSO_4 +\color{red}2NH_3 + H_2O \]

OpenStudy (jhannybean):

Alright, that makes 8 hydrogens on the right and 10 on the left

OpenStudy (jhannybean):

ow do you balance hydrogens on the right?

OpenStudy (dtan5457):

2(H20)

OpenStudy (jhannybean):

And you're done.

OpenStudy (jhannybean):

\[\sf Ca(OH)_2 + (NH_4)_2SO_4 \longrightarrow CaSO_4 +\color{red}2NH_3 + \color{red}2H_2O\]

OpenStudy (jhannybean):

\[\checkmark\]

OpenStudy (dtan5457):

lol wow. easy when you do it

OpenStudy (dtan5457):

i listed out all the elements and it was even more confusing

OpenStudy (jhannybean):

keeping inventory helps a lot.

OpenStudy (dtan5457):

what you mean?

OpenStudy (jhannybean):

Counting the number of Ca, N, H, S, O...etc on both sides of the equation.

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