General Chemistry Answers

Write the electron configuration, noble gas configuration, and orbital diagram of the following elements.

1. phosphorus
2. chlorine
3. potassium

Identify the element given the set of quantum numbers of the last entering electron: 2, 0, 0, -1/2

Identify the element given the set of quantum numbers of the last entering electron: 2, 1, +1, -1/2

What is the complete set of quantum numbers for the last entering electron of Nickel, Xenon and Bromine?

A given mass of nitrogen is 0.12 dm³ at 60⁰C and 1.01×10⁵ Nm–². Find it's pressure at the same temperature if it's volume is changed to 0.24 dm³.

Nitrogen gas and hydrogen gas are combined in a reaction to produce ammonia. If 6.0 moles of N2 and 6.0 moles of H2 are present in the mixture, which is the limiting reactant? 

PLEASE SHOW WORK! THANKS!

9. Elements with very large ionization energies also tend to have highly exothermic electron affinities. Explain

Given the ΔH° and ΔS°, calculate the G° values for the following reactions and indicate whether the reaction is spontaneous at standard conditions. If a reaction is not spontaneous, state what may be done to make the reaction spontaneous.

H° (kJ)

a. C (graphite) + 2 H2(g) ➡️ CH4(g) -74.9

b. CH3CH3(g) ➡️ H2(g) + C2H4(g) +137

c. N2(g) + 2 H2(g) ➡️ N2H2(L) +50

S°(kJ)

a. C (graphite) + 2 H2(g) ➡️ CH4(g)

+186.3

b. CH3CH3(g) ➡️ H2(g) + C2H4(g)

+121

c. N2(g) + 2 H2(g) ➡️ N2H2(L)

-331

Determine the pH of the buffer solution produced by the reaction of 5 mL 0.1 M KOH and 30 mL 0.1 M CH3COOH . The pKa of acetic acid is 4.76.

Find the pH of a solution produced by the reaction of 250 mL 0.1 M NaOH and 150 mL 0.03

M acetic CH3COOH Note that the pKa of acetic acid is 4.76.