The molar concentration of hydronium ion in pure water at 25 C is ________.
A) 0.00
B) 1.0 10-7
C) 1.0 10-14
D) 1.00
E) 7.00
Question 2
Calculate G (in kJ/mol) for the following reaction at 1 atm and 25 C: C2H6 (g) + O2 (g) CO2 (g) + H2O (l) (unbalanced)
Hf C2H6 (g) = -84.7 kJ/mol; S C2H6 (g) = 229.5 J/K mol;
Hf CO2 (g) = -393.5 kJ/mol; S CO2 (g) = 213.6 J/K mol;
Hf H2O (l) = -285.8 kJ/mol; S H2O (l) = 69.9 J/K mol;
S O2 (g) = 205.0 J/K mol
Question 3
What is the ONO bond angle in NO3-?
A) less than 109.5
B) 109.5
C) 120
D) greater than 120