Inorganic Chemistry Answers

Determine the equilibrium constant (kc) for the synthesis of PCl5 from PCl3 and Cl2 (PCl3 +Cl2 ⇌ PCl5).

a) A solution was prepared by dissolving 0.02 moles ethanoic acid in

water to give 1 L of solution. What is the pH?

b) to this solution was added 0.008 moles of concentrated sodium

hydroxide (NaOH). What is the new pH? (In this question you may

ignore changes in volume due to addition of NaOH).

How many gram of potassium and iodine present in one kilogram of KI

Determine the relative molecular mass \& relative formula mass of the following substances. [6] - Chlorine

Ammonium nitrate is produced when ammonia is combined with concentrated nitric acid as shown in the following balanced equation: NH,(aq) + HNO,(aq) — NH,NO)(aq) In an experiment, 404.2 g of ammonium nitrate is produced when 112.5 g of ammonia and excess nitric acid are combined. Determine the percentage yield of the product.

Suppose 4.00 grams of H2 were used?how many grams of water would be produced?

A cache of Hebrew manuscripts known as the Dead Sea Scroll was found in 1947. The specific activity of Carbon-14 in the linen wrappings of the book of Isaiah was about 0.200 disintegration per second per gram (dps g-1.). Carbon-14 in living materials has

a specific activity of 0.255 dps g-1. The half-life of Carbon-14 is

5.73 x103 years. Carbon-14 decay by First order rate law. Calculate the approximate age of the linen.

______________3. An oxide of chromium is made up of 5.20 g chromium and 5.60 g

oxygen What is the empirical formula of the oxide? (Note: An oxide of nitrogen

contains 63.1% oxygen and has a molar mass of 76.0 g/mol.)

______________4. What is the empirical formula for this compound?

______________5. What is the molecular formula of the compound?

Determine the boiling point and freezing point of the following solutions:

5.00g caffeine (C8H10N4O2) and 250.0 ml water.

0.300 kg chloroform (CHCl3) and in 21.0 g eucalyptol (C10H18O).

Determine the osmotic pressure of the solution made by dissolving 25.0 g of sodium chloride in 2.0 L of solution at 25 0C.