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Posted

salut, 

comment on a su que delta pH est egal a 0,05 ???

3 minutes ago, Mariaosta said:

salut, 

comment on a su que delta pH est egal a 0,05 ???

jncpa si l'image a visible mias c'est le qcm de la format physique sur le ph diapo 32 ( colle marachers qcm 2 )

  • Solution
Posted

Salut @Mariaosta!

 

Je ne suis pas certaine d'avoir bien suivie ta question parce que dans ce QCM le delta PH vaut 0,2 😉 

Ils ont fait le pH d'origine de la solution - moins le pH de la solution après ajout de HCl

Donc 5,25 - 5,05 = 0,2 

 

Aucune idée si ça t'aide mdr

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