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Leave spectator ions in please.

2007-08-26 20:47:36 · 3 answers · asked by Anonymous in Science & Mathematics Chemistry

3 answers

The above answerer has ignored the intended question, which was not an ionic equation.

KOH + H3PO4 ------> KH2PO4 + H2O

So:

K+OH- + (H+)3(PO4)3- ------> K+(H2PO4)2- + H2O

2007-08-26 21:10:56 · answer #1 · answered by Gervald F 7 · 0 0

Strictly the answer is none of these. Why? 3H+(aq) + PO4-3(aq) + 3K+(aq) + 3OH-(aq) ---> PO4-3(aq) + 3K+(aq)+ 3H2O(l) Since there are potassium and phosphate ions on both sides of the equation, they cancel out. That leaves 3H+(aq) + 3OH–(aq) ----> 3H2O(l) which is answer a] HOWEVER no chemist would leave it like this, anymore than they wouldn't cancel out ions on each side of the equation. It will cancel throughout by 3, giving the commonly accepted acid + alkali ionic equation: H+(aq) + OH–(aq) ----> H2O(l) So whoever set this clearly wants answer a] but having worked for many years as an examiner setting exam questions, I can tell you this one is a poor multiple choice question because it is misleading.

2016-05-18 23:53:29 · answer #2 · answered by kaylee 3 · 0 0

(K+ and PO4-3 are spectator ions, put them on both sides of the following equation)

OH- + H+ --> H2O

2007-08-26 20:52:42 · answer #3 · answered by Anonymous · 0 1

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