# Questions tagged [aqueous-solution]

For questions relating to compounds dissolved in water and resulting reactions.

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### An aqueous solution of NaCl has a mole fraction of 0.21. What is the mass of NaCl dissolved in 100.0 mL of solution? [closed]

Work mole fraction of NaCl = 0.21/0.21+0.79 If there is 1 mol of total solution, there will be 0.21 mol NaCl and 0.79 mol H2O 0.21 mol NaCl = 12.27 g 0.79 mol H2O = 14.23 g this would yield a ...
3k views

### How to tell the pH of HC2H3O2?

Find the $\mathrm{pH}$ of a $\pu{0.500 M}$ solution of $\ce{KC2H3O2}$. I am preparing for an exam on equilibrium and I have two questions: How would I go about calculating this? Is the $\ce{H3O}$ in ...
792 views

### Difference between some terms relating to liquids

So my chemistry teacher, when she talks about liquid substances she talks about them in reference to 3 words. She refers to liquid substance with one of these 3 words- 1)Aquesous form 2)Solution ...
3k views

### If NaCl dissociates when in water, why don't we see Chlorine gas escaping?

I've always been a little confused about the whole process of ions dissociating in solutions. When salt dissolves and splits into Na+ and Cl-, shouldn't the Cl- ion still be gaseous? And shouldn't we ...
53 views

### How do I get a 20% ratio of sodium bisulfate with 1 gallon water? [closed]

How many lbs do I add to 1 gallon of water to get a 20% sodium bisulfate ratio? I am in the middle of anodizing some aluminum.... I just threw the whole 3 lbs in... hopefully it works... I ended up ...
62 views

### Do bases undergo dissociation or ionisation in aqueous solution?

What do bases undergo when dissolved in water: ionisation or dissociation or both? Some books say ionisation while others say dissociation. What is the correct answer?
46 views

### Peroxide without hydrogen [closed]

How come we always see hydrogen peroxide and never peroxide by itself. Is there such a thing as peroxide ? Does this exist in nature? Why is hydrogen always associated with it? Please note: First ...
1k views

### Calculating pH of solution of phosphoric acid and ammonia

What is the $\ce{pH}$ of the solution created when $\ce{50ml}$ of $\ce{0.2M}$ $\ce{H3PO4}$ is mixed with $\ce{50ml}$ of $\ce{0.4M}$ $\ce{NH3}$? This problem can be approached rigorously. That's what ...
396 views

### Is it possible to synthesize magnesium nitrate through an aqueous solution of ammonuim nitrate and magnesium sulfate?

Is it possible to synthesize magnesium nitrate through an aqueous solution of ammonium nitrate and magnesium sulfate? I am attempting to determine whether the sulfate or nitrate radical has a higher ...
3k views

282 views

### How does a glow stick work [duplicate]

I understand that when the glow sticks snaps, it produces light, and that process is called triboluminescence. But I don't understand how that works
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### double replacement [closed]

$$\ce{KNO3(aq) + BaCl2(aq) -> KCl(aq) + Ba(NO3)2(aq)}$$ I found products but I noticed in product that both of them are in the aqueous phase. So actually no reaction occurs? Does a reaction need ...
58 views

### How does sodium carbonate reduce pH?

Sodium carbonate is used in pools to raise pH. From my understanding, it would dissociate in water like so: $$\ce{Na2CO3 <=> 2 Na+ + CO3^2-}$$ To raise pH, doesn't it have to absorb hydrogen ...
786 views

### How is the dichromate anion generated from potassium dichromate? [closed]

How does $\ce{K2Cr2O7}$ become $\ce{Cr2O7^2-}$ when dissolved in water?
1k views

### Why does acetic acid (CH3COOH) conduct electricity the worst in comparison to HBr, HCOONa and NaNO3 [closed]

Which of the given substances (in an aqueous solution) conducts electricity the worst: $\ce{CH3COOH}$, $\ce{HBr}$, $\ce{HCOONa}$ and $\ce{NaNO3}$? I've found this assingment included in the 2017 ...
48 views

### Where are the hydroxyl ions going?

We write $$[\ce{H^+}]\cdot [\ce{OH^-}] = 10^{-14}$$ in aqueous solution. When I add acid, the $[\ce{H^+}]$ will go up then $[\ce{OH^-}]$ will decrease to maintain the constant product, but where ...
525 views

### What are the dangers associated with a copper sulfate CuSO4 + Water H2O solution aprox 5 gallons at room temperature in a room with no ventilation.

Will there be hazardous gases in the room? is the evaporation of this solution harmful in any way to animals or humans?