Author: Anonymous

The decomposition of magnesium carbonate is shown: MgCO3(s) → MgO(s) + CO2(g)    ΔHo = 101 kJ/mol and ΔSo = 175 J/K∙mol What condition will decrease the value of ΔG (become more negative)? I. Increase the temperature II. Increase the concentration of CO2(g)  

The density of a 5.58 m aqueous acetic acid is 1.04 g/mL. What is the molar concentration of this solution? The molar mass of acetic acid, CH3COOH, is 60.06 g/mol.

An initial state before the reaction of CH4 and Cl2 is shown in the figure. Based on the balanced equation and the figure, what is the limiting reactant?       CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)

What is the pH of a buffer made by combining 45.0 mL of 0.150 M nitrous acid and 20.0 mL of 0.175 M sodium nitrite? The Ka of nitrous acid, HNO2, is 4.5×10–4.   

What are the coefficients for the chemical equation below, once balanced?  ___ CH3CH2CH2OH(l) + ___O2(g) → ___CO2(g) + ___H2O(l)

Oxygen and ozone are allowed to come to equilibrium in the exothermic reaction: 2O3(g) ⇌ 3O2(g) Which change will decrease the numerical value of the equilibrium constant, K?

Which molecular compound could be dinitrogen monoxide?

Between HI and HF, which has the higher boiling point, and why?

For the galvanic cell at 298 K: Zn(s) + 2In2+(aq) → Zn2+(aq) + 2In+(aq)   Eocell = 0.36 V What is the equilibrium constant, K?  

For the synthesis of nitrogen dioxide, NO2: 2N2(g) + O2(g) → 2NO2(g) If this reaction has the energy diagram shown below, what is the spontaneity of the reaction?