Thread: titration

50 ml of a solution containing 1g of each na2co3,nahco3 and naoh was titrated with 1N hcl whal will be the titre readings if

only phenolphthalein is used as indicator
only methyl orange used as indicator from very beginning.
Methyl orange is added after the first end point with phenolphthalein

i know
na2co3+hcl=nahco3+nacl
na2co3+2hcl-2nacl+h20
naoh+hcl=nacl+h20

how to use them in this question

Please, use the correct chemical symbols.

Phenolphtalein will show the end point when those reactions have taken place:

NaOH + HCl ---> NaCl + H2O
NaCO3 + HCl ---> NaHCO3 + HCl

Methyl orange will show the end-point when those reactions have taken place:

NaOH + HCL ---> NaCl + H2O
Na2CO3 + 2HCl ---> 2NaCl + H2O + CO2
NaHCO3 + HCl ---> NaCl + H2O + CO2

Phenolphtalein and Methyl Orange one after the other will give you end points when first:

NaOH + HCl ---> NaCl + H2O
NaCO3 + HCl ---> NaHCO3 + HCl

Then;

NaHCO3 + HCl ---> NaCl + H2O + CO2

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Can you work from there, all the titre readings?