Question 1:
when an acid name ends in -ic acid, there is often a related acid whose name ends in -ous acid. the formula of the -ous acid has one less oxygen atom than that of the -ic acid. with this information, write formulas for:
(a) sulfurous acid and sulfuric acid
(b) nitrous acid and nitric acid.
question 2:
what is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m? show your calculation.

Question 1:

(a) Sulfurous acid: H2SO3

Sulfuric acid: H2SO4

(b) Nitrous acid: H2NO2

Nitric acid: H2NO3

Question 2:

To calculate the pH, based on concentration of H+ ions, there is one formula:

So the pH of this solution is

(the solution is basic).

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.