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Chemistry 7 Online
OpenStudy (anonymous):

Be prepared effervescent tablets. You use 500g sodium bicarbonate (MW: 84 g / mol). To make effervescent mixture will be malic acid (MW: 134 g / mol). To effervescent solution should not taste bad as soap with rather little tart, use 1.1 times more of the substance quantity of the acid than the base. a) Write shower action between malic acid and sodium bicarbonate. b) How much malic acid to be used? Show calculation; give the result in g

OpenStudy (chmvijay):

can you write the reaction equation between the malic acid and the sodium carbonate

OpenStudy (anonymous):

3NaHCO3 + C4O5H5 -> .......3Co2 + 3H2O i really don't know

OpenStudy (chmvijay):

humnn try to balance it along with CO2 u should get COO-Na should come right side

OpenStudy (anonymous):

C2H2(COOH)2 + Na2CO3 -> C2H2(COONa)2 + H2O + CO2

OpenStudy (chmvijay):

yaa now its correct

OpenStudy (chmvijay):

mean first one u alredy did right

OpenStudy (anonymous):

which one the first one?

OpenStudy (chmvijay):

first option of the question

OpenStudy (chmvijay):

a) Write shower action between malic acid and sodium bicarbonate.

OpenStudy (anonymous):

Yes :) Now i have to finde the answer for b)

OpenStudy (chmvijay):

that is confusing meet too

OpenStudy (anonymous):

I have to finde how much malic acid has to be used i g... How do i do that?

OpenStudy (anonymous):

The balanced equation of C2H2(COOH)3 + NaHCO3 -> ?

OpenStudy (anonymous):

C4H5O5 + 3NaHCO3 -> C4H2Na3O5+ 3H2O + 3CO2

OpenStudy (anonymous):

Now i can answer b)

OpenStudy (chmvijay):

yes please let me know

OpenStudy (anonymous):

Do you know how to do it?

OpenStudy (chmvijay):

noo just cracking the head

OpenStudy (chmvijay):

How much malic acid to be used to what i want ? the question is not clear i find

OpenStudy (anonymous):

To prepare effervescent tablets

OpenStudy (anonymous):

We have a acid-base reaction C4H5O5 + 3NaHCO3 -> C4H2Na3O5+ 3H2O + 3CO2 x*1,1 5,94mol n(NaHCO3) = m/M = 500g/84 g/mol = 5,94mol x= m= n*M -> x*134 g/mol = ¬-------------g

OpenStudy (chmvijay):

how much we have to prepare the eff tablet

OpenStudy (anonymous):

yes

OpenStudy (chmvijay):

not yes how much

OpenStudy (anonymous):

Be prepared effervescent tablets. You use 500g sodium bicarbonate (MW: 84 g / mol). To make effervescent mixture will be malic acid (MW: 134 g / mol). To effervescent solution should not taste bad as soap with rather little tart, use 1.1 times more of the substance quantity of the acid than the base. b) How much malic acid to be used? Show calculation; give the result in g

OpenStudy (anonymous):

To make it clear.. I have to finde out how much malic acid to be used i g.. And my answer is We have a acid-base reaction C4H5O5 + 3NaHCO3 -> C4H2Na3O5+ 3H2O + 3CO2 x*1,1 5,94mol n(NaHCO3) = m/M = 500g/84 g/mol = 5,94mol x= m= n*M -> x*134 g/mol = ¬-------------g But how do i found x?

OpenStudy (chmvijay):

iam not getting it :(

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