Inorganic Chemistry Answers

Calculate the molar concentration of solute in the following:

1. 7.59g of NH₃ in 1.500L solution.
2. 0.291g of H₂SO₄ in 8.65L solution.
3. 85.2g of NaOH in 5.00L solution.
4. 31.25g of NaCl in 2.00L solution.
5. 6mg of atmospheric N₂ in water with volume of 2.00L.

1. Concentrated sulphuric acid is a solution that has a density of 1.84 g/ml and contains 98.3

% H2SO4 by mass. What is the molarity of this acid?

2. What is the molality of a solution that contains 0.850 g of ammonia, in 125 g of water?

3. How would you distinguish molarity, molality and normality?

A closed system initially containing 1.000 × 10-3 M H2 and 2.000 × 10-3 M I2 at 448°C is allowed to reach

equilibrium.At equilibrium, the HI concentration is 1.87 × 10-3 M. Given that the reaction equation is H2(g) + I2(g)

↔ 2 HI(g), find:

a. Equilibrium concentrations of the two reactants

b. Kc of the reaction taking place.

Describe how scientist would proceed from the formulation of a question to the establishment of theory

Interpret the following equations in words?

A. CoCl2(s) + 2 HF(g) – CoF2(s) + 2 HCl(g)

B. Pb(NO3)2(aq) + 2 KI(aq) – PbI2(s) + 2 KNO3(aq)

Which of the following are balanced?

A. HCl + KOH – H2O + KCl

B. CH4 + Cl2 – CH2Cl2 + HCl

C. H2O + MgO – Mg(OH)2

D. Al(OH)3 + H3PO4 – AIPO4 + 2 H2O

What is the pH of a solution that is prepared by adding 38.34 mL of 1.83 M HCl to 0.772 L of 0.315 M trimethylamine (a weak base)?

What is the reason for the arrangement of

F-,N3-,O2-,Na+ in the order of increasing size

Arrange the ions N3-,F-,O2- and Na+ in the order of increasing size

Lead metal is obtained from lead sulphide through the following reaction:

          2PbS(s) + 2C(s) + 3O₂(g) → 2Pb(s) +2CO(g) + 2SO₂(g)

Suppose 100 g of PbS is reacted with 4g of C and 20g O₂.

Find the limiting reactant for this reaction