HW F11

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Lauryn Shinno 2H
Posts: 59
Joined: Fri Sep 28, 2018 12:24 am

HW F11

Postby Lauryn Shinno 2H » Sat Oct 06, 2018 10:52 am

For part c, I got NH6PO4, which is correct. However, the answer says NH6PO4 or [NH4][H2PO4]. How do you convert NH6PO4 into [NH4][H2PO4] and do we have to know this?

Diana Bibireata 1B
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

Re: HW F11

Postby Diana Bibireata 1B » Sat Oct 06, 2018 12:17 pm

NH4+ (ammonium) and H2PO4- (dihydrogen phosphate) are polyatomic ions which is why they wrote it like that.

Alicia Gibbons 1B
Posts: 31
Joined: Fri Sep 28, 2018 12:17 am

Re: HW F11

Postby Alicia Gibbons 1B » Sat Oct 06, 2018 12:53 pm

When polyatomic ions are involved in reactions, they stay together. For example, carbonate as a reactant will become carbonate as a product. That's something you should know when calculating reactions, since the charge of the polyatomic ion will determine the needed amount of whatever's attached to it.

inlovewithchemistry
Posts: 104
Joined: Fri Sep 28, 2018 12:19 am

Re: HW F11

Postby inlovewithchemistry » Sun Oct 07, 2018 7:46 pm

Just wondering, is it important that we learn all of the polyatomic ions for the first test/subsequent tests? I know a few, but is there a list somewhere of ones we should memorize or something? Thanks!

404536963
Posts: 29
Joined: Fri Feb 02, 2018 3:02 am

Re: HW F11

Postby 404536963 » Sun Oct 07, 2018 10:35 pm

I think the professor said that we don't need to know polyatomic ions as of right now, and not for the first test. We may go further in depth about them later in class, though.


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