Based on this titration curve for a 0.1 M monoprotic weak acid with 0.1 M NaOH, what is the pH at the equivalence point in the titration?

Based on this titration curve for a 0.1 M monoprotic weak acid with 0.1 M NaOH, what is the pK_a of the acid?

Based on this titration curve for a 0.1 M  weak base with 0.1 M HCl, what is the best indicator for this titration? 

What is the pH of a buffer solution containing 1.02 mol/L acetic acid and 1.21 mol/L sodium acetate? 

pK_a acetic acid = 4.76

This graph shows measurements of the absorbance of light for solutions containing different concentrations of Fe³⁺. Select the one statement below which best describes the graph. 

Mida toob kaasa lõpptarbija turule toomine?

Kodutarbija on kõige väiksema võimsuse liidestamise ühikhinnaga paindlikkuse tagaja.

Mis iseloomustab elektrisüsteemi paindlikkust?

Mida on vaja elektrisüsteemis tasakaalustada?

Mis on elektrisüsteemi paindlikkus?