Help to calculate! Thanks!

TUBE 1:

what is the PH when 1ml 1.0M HC2H3O2 and 9ml 1.0M NaC2H3O2 mixed together? ( show your calculations)

TUBE 2:

What is the PH when 5ml 1.0M HC2H3O2 and 5ml 1.0M NaC2H3O2 mixed together?

TUBE 3:

What is the PH when 9ml 1.0M HC2H3O2 and 1ml 1.0M NaC2H3O2 mixed together?

Which of the three tubes solutions do you expect to have highest buffer capacity against a strong acid? Which one do you expect to have the highest buffer capacity against a strong base? Briefly explain your reasoning