Someone please help me figure this out? Explain please? When an base ionizes in water, the number of hydrogen ions in the solutions and the value of the pH

A. decreases, increases

B. decreases, decreases

C. increases, increases

D. increases, decreases

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

What is the relation between concentration of reactants and the rate of chemical reaction?

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.