IOM 2018, Блиц, английски — Задача 53

OLYMPIAD OF METROPOLISES. Moscow, September 3 · 3 септември 2018 г.

Условие

Which of the following mixtures is a buffer solution?

1. $CH_3COOH$ (50 mL; 0.1 mol/L) + $NaOH$ (50 mL; 0.1 mol/L)
2. $CH_3COOH$ (50 mL; 0.1 mol/L) + $NaOH$ (50 mL; 0.05 mol/L)
3. $CH_3COOH$ (50 mL; 0.05 mol/L) + $NaOH$ (50 mL; 0.1 mol/L)
4. $CH_3COOH$ (50 mL; 0.05 mol/L) + $NaOH$ (50 mL; 0.05 mol/L)

Отговори

Решение

Оригинал в Архива: blitz.pdf · официални решения: blitz-answers.pdf