Inorganic Chemistry Answers

Difference in preparation of oxalic acid and sodium hydroxide

10.25M HCL solution is made up to volume in a 500ML volumetric flask,what will be it's new concentration?

How much of each component would you need to make a 0.5 M sodium phosphate buffer containing 0.5 M KCl and 0.05% sodium azide, pH 8.0?

a.) calculate the pH of a 0.025 Nitric acid solution

b.) calculate the pH of a 0.10 NaOH

c.) a solution prepared by dissolving 0.28 g of lime (CaO) in 1.00 L water to make limewater (Ca(OH)2)

a.)If 1.00 mol of H2 is allowed to react with 1.00 mol of I2 in a 10.L reaction vessel at 700 K, what are the concentrations of H2, I2, and Hl at equilibrium given that Kc is 57.0?

b.)What are their concentrations in mol/L?

c.) If 0.100 M of H2 is allowed to react with 0.200 M of I2 in a reaction vessel at 700 K, what are the concentrations of H2, I2, and Hl at equilibrium given that Kc is 57.0?

Which of these is not an isotope of hydrogen?

a)Protium
b)Deutrium
c)Tritium
d)Neutrium

Predict the mass of hydrogen gas produced when 2.73 g of aluminum reacts in a single replacement reaction with excess sulphuric acid.

2Al + 3H sub 2 SO sub 4, reaction arrow, 3H sub 2 + Al sub 2 (SO sub 4 ) sub 3.

Aluminum oxide is decomposed using electricity to produce aluminum metal. How many grams of aluminum metal can be produced from 100.0 g of Al2O3?

2Al sub 2 O sub 3, reaction arrow, 4Al + 3O sub 2.

Iron metal is produced in a blast furnace by the reaction of iron (III) oxide and coke (pure carbon). If 25.0 moles of pure Fe2O3 is used, how many grams of iron can be produced? The balanced chemical equation for the reaction is:

Fe sub 2 O sub 3 + 3C, reaction arrow, 2Fe + 3CO.

Ammonia is produced synthetically by the reaction below. How many moles of NH3 are formed when 200.0 g of N2 reacts with hydrogen?

N sub 2 + 3H sub 2, reaction arrow, 2NH sub 3.