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half equation help

1. write a half equation for reaction between calcium ions and hydroxide ions
2. write a half equation for reaction between barium ions and chromium ions

for 1. is this right:

Ca2- + 2OH+ -> Ca(OH)2

and for 2, what are the products?
Reply 1
Avatar for ch0wm4n
ch0wm4n
10
Original post by The Bright Beast
1. write a half equation for reaction between calcium ions and hydroxide ions
2. write a half equation for reaction between barium ions and chromium ions

for 1. is this right:

Ca2- + 2OH+ -> Ca(OH)2

and for 2, what are the products?


For the first one you need to swap the signs around, Ca is 2+ and OH is 1-, you might want to add state symbols as well.

Not sure about second one, will edit if i work it out. :smile:
haha thanks :smile:

and from 1, I deduced 2 should be BaCrO4
Reply 3
Avatar for Acetic
Acetic
These are ionic equations not half equations. Half equations are written for redox processes and involve electrons.

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