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The dissociation of acetic acid, CH3COOH, has an equilibrium constant at 25C of 1.8 x 10-5. The reaction is as follows : CH3COOH (aq)  CH3COO- (aq) + H+ (aq) If the equilibrium concentration of CH3COOH is 0.46 moles in 0.500 L of water and that of CH3COO- is 8.1 x 10-3 moles in the same 0.500 L, calculate [H+] for the reaction. 


Complete the following acid base reactions, indicate the conjugate acid-base pairs, and state whether the reaction has a large or small equilibrium constant.

a. CH3COOH(aq) + NH3(aq) 

b. H2CO3 (aq) + NO3 - (aq) 

c. H2CO3 (aq) + H2O (l) 

d. HCO3 - (aq) + H2O (l) 

e. NH3 (aq) + H2O (l) 


Consider what happens when the strong acid, nitric acid (HNO3), reacts with water.
a. Write the balanced equation for the ionization reaction.
b. Write the expression for Ka.
c. What can we say about the size of Ka for this reaction?

Consider the reaction: NaNO3(s) + H2SO4(l) → NaHSO4(s) + HNO3(g) ΔH° = 21.2 kJ How much heat must absorbed by the reaction system to convert 100g of NaNO3 into NaHSO4(s)? 


6. (4 pts) Terminal alkynes have good regioselectivity, while internal alkynes often form mixtures-explain.
(3 pts) Write the factors stabilizing carbocations.
3 pts) Give three-dimensional representation for the orbitals used by the C’s in
a) H2C=CH+ b) H2C=CH- and c) H2C=CH.
5 pts) Consider the compound 3(R),5,5-trimethylcyclohexene. Upon reduction with H2 on a 1% Pt/C catalyst, draw the equation for this reaction, find out the absolute configuration of the product and explain why the absolute configuration is completely inverted in this reaction.
What is the enthalpy change when 49.4 mL of 0.430 M sulfuric acid reacts with 23.3 mL of 0.309 M potassium
hydroxide?
3.
H2SO4(aq) + 2KOH(aq) → K2SO4(aq) + 2H2O(l) ΔH
What is structure of 135 trinitroethyl benzene