Inorganic Chemistry Answers

Draw the pH scale of the following non-aqueous solvents.

• Acetonitrile                             
• Ethanol

Describe the chemical characteristics of amphiprotic and aprotic solvents.

1.     Calculate the pH of the following solutions:

A.     0.01 M NaOH                                               

B.     1.0 x 10^-8 M HCl

An isotonic saline solution was prepared by dissolving 0.92g of NaClin

2 points

enough distilled water to make 100ml solution. What is the percent by

mass/volume of the solution?

An isotonic saline solution was prepared by dissolving 0.92g of NaClin

2 points

enough distilled water to make 100ml solution. What is the percent by

mass/volume of the solution?

5. What is the molality of a 10% by mass NaCl solution when used in qualitative determination of tannins in plants? *

What is the molality of a 10% by mass NaCl solution when used in qualitative determination of tannins in plants?

In analyzing the crude fiber content of a certain food, 0.313N NaOH is required. What is the mass of NaOH pellets needed to prepare 500ml of the solution? What is the molarity of the solution?

0.5 M KOH is one of the reagents needed in the qualitative determination of stimulant cathartic anthraquinone in plants. How many grams of KOH are required to prepare 1L solution? MW KOH = 56 g/mol

An isotonic saline solution was prepared by dissolving 0.92 g of NaCI in enough distilled water to make 100 ml solution. What is the percent by mass/volume of the solution?

How much salt and how much water must be mixed to make 250 g brine solution that is 50% salt by mass?