Give the chemical formulas for four possible salts

AI Thread Summary
The discussion centers on identifying possible salts formed from the presence of potassium phosphate, ammonium, and carbonate ions. Participants clarify that salts consist of a cation and an anion, leading to the need for combinations of the provided ions. The conversation emphasizes the importance of correctly pairing the ions to form valid salts. There is a focus on the combinations of two cations (potassium and ammonium) with two anions (phosphate and carbonate). Ultimately, the discussion seeks to determine the correct chemical formulas for the potential salts based on the given ions.
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Please post this type of questions in the HW section using the template.
Lets say you were given an unknown which contains two salts, and your results give you evidence that potassium phosphate, ammonium, and carbonate ions are all present. What are four possible salts that could be your unknown?
 
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would possibilities be
K2Cr2O7
HCN
Na2CO3
PO3-4
 
Nope.

Salt contains a cation and an anion. You have two cations and two anions. In how many ways can you combine them?
 
Thanks for clearing things up, appreciate it!
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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