Problem: What will the predominant species in H 2CO3 at pH of 7.5?

🤓 Based on our data, we think this question is relevant for Professor Wallach's class at ODU.

FREE Expert Solution

We are asked to identify the predominant species in H2CO3 at pH=7.5


Recall that H2CO3 is a diprotic acidan acid which can donate up to two protons [H+] in solution. It has two Ka values for each proton dissociation as follows:


H2CO3(aq)+  H2O(aq)  ⇌  HCO3-(aq)  + H3O+(aq)       Ka1 = 4.5 x 10-7

HCO3-(aq)+  H2O(aq)  ⇌  CO32-(aq)  + H3O+(aq)          Ka2 = 4.7 x 10-11


Note: You can check on Ka values in books or the internet. 


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Problem Details

What will the predominant species in H 2CO3 at pH of 7.5?


Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Diprotic Acid concept. You can view video lessons to learn Diprotic Acid. Or if you need more Diprotic Acid practice, you can also practice Diprotic Acid practice problems.

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Based on our data, we think this problem is relevant for Professor Wallach's class at ODU.