Một dung dịch đệm có thể tích 50.0 mL chứa 12.5 mmol HClO 2 và 7.25 mmol KClO 2 . (K a = 1.1*10 -2 )
a. pH của dung dịch này là bao nhiêu?
b. Tính pH của dung dịch này nếu thêm vào đây 1.00 mmol Ca(OH) 2 .
c. Tính pH của dung dịch này nếu thêm vào đây 2.00 mL dung dịch HCl 6 M

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.