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preet

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ex. [tex] [Na] = 0.050 mol L ^{-1}[/tex]

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In summary: A content: In summary, the notation "TiA" means "total ionic activity." This notation is used to calculate the ratio of silver to tin in a redox reaction.

- #1

preet

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ex. [tex] [Na] = 0.050 mol L ^{-1}[/tex]

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- #2

preet

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"What is the ratio x:y when the equation below is properly balanced?"

[tex]xSn^{2+}(aq) + y Ag^{+}(aq) -> n Sn^{4+}(aq) + m Ag^{+}(s)[/tex]

I've never seen a question like this before... an explanation or a link to a site or something would be greatly appreciated.

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pack_rat2

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"L^-1" means "per liter." 0.05 mol/L is 0.05 M.preet said:

ex. [tex] [Na] = 0.050 mol L ^{-1}[/tex]

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For the second,i'm sure u miss the negative ions...Silver ion is a spectator in a redox ionic reaction.I don't see a connection between "x" & "y".And next time use [itex] \rightarrow [/itex] (code \rightarrow).

Daniel.

- #5

pack_rat2

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Simply balance the equation and give the ratio of x to y. This is a re-dox reaction. They're usually solved using the method of "half-reactions."preet said:I have another question (did not want to create a new thread):

"What is the ratio x:y when the equation below is properly balanced?"

[tex]xSn^{2+}(aq) + y Ag^{+}(aq) -> n Sn^{4+}(aq) + m Ag^{+}(s)[/tex]

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pack_rat2

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Daniel.

- #8

preet

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http://img196.exs.cx/img196/5966/chemeq3es.gif

Maybe its a typo?

Maybe its a typo?

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[tex] Sn^{2+}_{(aq)} + Ag^{+}_{(aq)}\rightarrow Sn^{4+}_{(aq)}+Ag\downarrow [/tex]

Now you can do the redox properly...

Daniel.

- #10

Borek

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dextercioby said:the unit 'liter' which should be shortened 'l', not 'L'

That's what I thought on Monday when I asked about it in other forums...

I was pointed here:

http://physics.nist.gov/cuu/Units/outside.html

And many people convinced me to use L (see sci.chem or CHEMED-L archives).

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Daniel.

- #12

Borek

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Have you read comment on the NIST page? L was adopted in 1979 and **is** internationally accepted. So it is correct.

IUPAC lists both forms just like NIST does:

http://www.iupac.org/reports/1993/homann/units51.html

I was taught l 30 years ago and I am not advocating L - but it seems L is now accepted by all major institutions and I must agree with the fact that L is much less prone to be mistaken with 1 then l is. It doesn't mean I like it :)

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BATE - pH calculations, titration curves

IUPAC lists both forms just like NIST does:

http://www.iupac.org/reports/1993/homann/units51.html

I was taught l 30 years ago and I am not advocating L - but it seems L is now accepted by all major institutions and I must agree with the fact that L is much less prone to be mistaken with 1 then l is. It doesn't mean I like it :)

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- #13

pack_rat2

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I usually use "L" for liter, and "ml" for milliliter. When on a computer or on the Net where certain specific fonts are employed, I *HATE* to use "l" because it looks too much like "I".Borek said:...And many people convinced me to use L ...

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Daniel.

- #15

Borek

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Capitals are used for physical quantities and multiples.

m stands for mili and M for Mega - both are SI multiples.

s stands for second, K for Kelvin - both are base SI units.

So either I don't understand what you have written or you are not right

What I am aiming at is that there are no 'hard' rules.

And, while we can criticize units abbreviations defined by international organizations like IUPAC or CGPM we have no choice but to accept them (and to fight for changes if we think it is important)

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Daniel.

- #17

preet

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[tex] Sn^{2+}_{(aq)} + Ag^{+}_{(aq)}\rightarrow Sn^{4+}_{(aq)}+Ag [/tex]

was the equation (sorry for my typo earlier)

And I needed to find the coeffecient on the left side of the equation (in front of tin and silver)... so..

*tin has lost two electrons

[tex] Sn^{2+}\rightarrow Sn^{4+}+ 2e^{-} [/tex]

*silver has gained one electron (one atom of silver has gained one electron)

[tex] Ag^{+} + e^{-}\rightarrow Ag [/tex]

*2 electrons were lost by tin so to balance that I multiply Ag by 2...

and the coeffecients are 1 in front of Sn and 2 in front of Ag? Is this right? TiA!

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Yes,it is correct...

Daniel.

Daniel.

TiA ^{-1} is a shorthand notation for titratable acidity, which is a measure of the amount of acid that can be neutralized by a given amount of base. In this notation, the superscript -1 represents the unit of molarity, or moles per liter (mol/L). This means that TiA ^{-1} refers to the concentration of titratable acidity in a solution.

To calculate TiA ^{-1}, you first need to determine the volume (in liters) of the solution you are testing. Then, you will perform a titration, where you add a known amount of base to the solution until the acid is completely neutralized. The amount of base used in the titration will be used to calculate the concentration of titratable acidity, represented by TiA ^{-1}. This can be calculated using the formula TiA ^{-1} = (volume of base used in titration) x (concentration of base).

TiA ^{-1} is an important measurement in chemistry as it allows us to quantify the amount of titratable acidity in a solution. This is particularly useful in industries such as food and beverage, where the acidity of a product can affect its taste, shelf life, and safety. Titratable acidity can also be used to determine the quality and ripeness of fruits and vegetables.

No, TiA ^{-1} is not directly related to pH. pH is a measure of the concentration of hydrogen ions in a solution, while TiA ^{-1} is a measure of the concentration of titratable acidity. However, there is a relationship between TiA ^{-1} and pH, as titratable acidity is a major contributor to the overall acidity of a solution. So, while TiA ^{-1} cannot be used to determine the pH of a solution on its own, it can provide valuable information about the acidity of a solution.

Yes, there are other notations that can be used to represent titratable acidity. Some common alternatives include TA (total acidity) and TTA (total titratable acidity). These notations may be used in different industries or regions, but they all refer to the same concept of measuring the amount of acid that can be neutralized in a solution.

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