For a 0.50 M solution of methylamine, CH3NH2. (Kb = 4.4 x 10-4). Find pH and pOH

Calculate the pH of a solution prepared by dissolving 0.040 moles of sodium nitrite (NaNO2) in 200 mL of a 0.10 M nitrous acid solution (HNO2, Ka = 5.1 x 10-4).

Calculate the pH that results when 2.35 mL of a 0.0125 M aqueous solution of KOH is added to 23.50 mL of an 0.0132 M aqueous solution of methylamine (CH3NH2, Kb = 4.2 x 10–4). Show your work and justify any approximations made.

Complete the abundance diagram by identifying the species present in an aqueous solution of 1.00 M acetic acid (CH, COOH). The K』 of acetic acid is 1.8 × 10-5. Percent Abundance 50%- EX 7 pH What is the approximate pH of a solution of 1.00 M CH3COOH? Answer Bank CH3COO~ CH3COOH OH- H3O⁺ 14

Find the pH of the following solutions 0.6g phenol C6H5OH in 500 mL H2O, Ka = 1 x 10-10

What is the pH of a 0.35 M solution of a Base with a  Kb = 4.4 × 10–4 at 25oC? Identify the step(s) where a mistake was made. Step 1:  An ICE table was set up Step 2:  The student ran the 5% test and it failed. Step 3:  At equilibrium, the concentrations were the following:             i.  B= 0.35-x            ii.  Conjugate acid= x           iii. Conjugate base= x Step 4:  The value of x is equivalent to the pH. The step(s) that are incorrect is/are (if multiple steps,____________ use a comma to separate the steps)  and the correct answer is___________

Methylamine (CH3NH2) has a Kb = 4.4 x 10-4. (Note the lone pair of electrons on the nitrogen atom) What is the pH of a 2.0 M solution of methylammonium chloride (CH3NH3Cl)?

Nitrous acid, HNO2 has a Ka = 7.13 x 10-4.   Construct an ICE table describing the ionization of 0.700 M HNO2. From the ICE table, estimate the following values:   Find the pH   Find the concentration of [NO2--]   Find the extent of ionization, ?α

9. Find the pH of 0.255 M NH4OH. KB= 1.78 x 10-5.

-2 A solution is prepared at 25 °C that is initially 0.063 M in chlorous acid (HC10₂), a weak acid with K=1.1 × 10¯ Calculate the pH of the solution. Round your answer to 2 decimal places. pH X and 0.18M in potassium chlorite (KC10₂). I Ś