which is more acidic

[Parsia Vazirnia 2L]

Why is formic acid more acidic (HCOOH) than acetic acid (CH3COOH)?

[Banik_Housepian_2K]

the H3- is electron-donating relative to hydrogen and it donates electrons to the carboxyl group which makes it more negative.
This causes the acid to be weaker, because the proton now has to be separated from a more negative conjugate base. likewise, CH3CH2- is more electron-donating than CH3-, and propionic acid is weaker still.

[Parsia Vazirnia 2L]

the H3- is electron-donating relative to hydrogen and it donates electrons to the carboxyl group which makes it more negative.
This causes the acid to be weaker, because the proton now has to be separated from a more negative conjugate base. likewise, CH3CH2- is more electron-donating than CH3-, and propionic acid is weaker still.

How can the Hydrogens donate electrons? Please be as detailed as possible because I am trying really hard to visualize.

[Charles Ang 1E]

the H3- is electron-donating relative to hydrogen and it donates electrons to the carboxyl group which makes it more negative.
This causes the acid to be weaker, because the proton now has to be separated from a more negative conjugate base. likewise, CH3CH2- is more electron-donating than CH3-, and propionic acid is weaker still.

How can the Hydrogens donate electrons? Please be as detailed as possible because I am trying really hard to visualize.

Think of HCL, there are a total of 8 electrons. Chlorine has seven and will grab onto Hydrogen's electron in order to have an octet. In this sense, hydrogen is donating its electron to chlorine. The same goes for many other acids.