A 0.495M solution of nitrous acid, HNO2, has a pH of 1.83 a) Find the percent ionization of nitrous acid in this solution. You may assume the temperature is 25 oC.

b) Calculate the value of Ka for nitrous acid. You may assume the temperature is 25 oC.

c) Using the value of Ka you determined in b), calculate the pH of a solution formed by adding 1.0 g of NaNO2 to 750 mL of 0.0125M HNO2. You may assume the temperature is 25 oC.

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.