Consider the following titration curve graphs:   Which plot shows the pH curve expected when NH3 is titrated by HNO3 ?

The diagrams here represent solutions at various stages in the titration of a weak base B (such as NH3) with HCl. Which image best represents the solution at the initial stage before the addition of HCl?                                                                   

Consider a working voltaic cell based on the following redox reaction:    

If a reaction has a  ΔG = 0, this indicates that:

A 0.085 M solution of acetic acid (CH3COOH)  has a pH of 2.55. What is the percent ionization of this solution?

For the elementary reaction 2 NO (g)   →   N2O2(g)     the molecularity of the reaction is                           , and the rate law is, rate =                         .

Consider the following aqueous reaction between ammonia (NH3) and formic acid (HCOOH): NH4+ (aq)  + HCOO─ (aq)   ⇌    NH3 (aq)  +  HCOOH (aq)   Identify the stronger acid and predict whether the equilibrium lies to the left or to the right? Hint: The Ka of HCOOH is 1.8 x 10─4 Hint: The Ka of NH4+ is 5.5 x 10─10

A 0.025 M solution of acetic acid (CH3COOH)  has a pH of 2.98. What is the percent ionization of this solution?

Which of the following solutions will have the highest pH? Hint: This is not a calculation problem. Consider the type of acid and base (strong vs. weak acid and base).  

Copper metal, Cu (s), is produced by running a current through a solution of Cu2+ in an electrolytic cell. How many grams of copper metal can be deposited from Cu²⁺(aq) when a current of 2.50 A is run for 2.00 h? Hint:  F = 96,500 C/mol e− Hint:  1 A = 1 C/s