Salty
Louie Louie
React
Icy pH
SlowMotion
100

NaNO3

Neutral

100

BH3 + (CH3)2S → H3BS(CH3)2

Acid BH3

Base (CH3)2S

100

Write out the Stepwise Ka reactions for citric acid H3C6H5O7

H3C6H5O7 + H2O ⇌ H2C6H5O7+ H3O+  Ka1

 H2C6H5O7+H2O ⇌  HC6H5O72- + H3O+  Ka2

HC6H5O72- + H2O ⇌ C6H5O73- + H3O+    Ka3


100

Calculate the pH of a 1.30 x 10¯9 M of HBr solution

6.99

100

Consider a buffer made by adding 132.8 g of NaC₇H₅O₂ to 300.0 mL of 2.31 M HC₇H₅O₂ (Ka = 6.3 x 10⁻⁵) What is the pH of this buffer?

4.32

200

C5H5NHClO4

Acidic

200

CaO + CO2 → CaCO3

Acid CO2

Base CaO

200

Equilibrium formed when C5H5N is added to water?

C5H5N + H2O ⇌ C5H6N+ OH-

200

A solution is prepared by dissolving 0.56 g of Benzoic acid (C6H5COOH, Ka=6.4 x 10-5, Molar Mass = 122.12 g/mol) in 1 L of water. Calculate pH

pH = 3.27

200

It takes 83 mL of a 0.45 M NaOH solution to neutralize 235 mL of an HCl solution. What
is the concentration of the HCl solution?

0.16 M HCl

300

KOCl

Basic

300

Cd(CN)2+2CN-→Cd(CN)2+4

Acid Cd(CN)2

Base CN-

300

CH3COOH + H2O ⇌ CH3COO- + H3O+ 

What will increase the pH of the solution?

A) Increasing the pKa

B) Increasing Acetic acid concentration

C) Adding Sodium Acetate

D)Decreasing the Volume of H2O

C) Adding Sodium Acetate

300

Calculate the percent Dissociation for a 0.22 M solution of Chlorous acid (Ka=1.2x10-2)

 about 23%

300

Determine the pH of a buffer that is 0.25 M NH₃ and 0.15 M NH₄Cl. The value of pKb for NH₃ is 4.75

9.47

400

NH4NO2

Kfor NHis 1.8 x 10-5

Ka for HNO2 is 4.0 x 10-4

Acidic

400

Would you expect Fe3+ or Fe2+ to be the stronger lewis acid?

Fe3+

400

Which of the following will increase the percentof NH3 that is converted to the ammonium ion in water?

A.) addition of NaOH

B.) addition of HCl

C.) addition of NH4Cl

B.) addition of HCl

400

A solution of Formic acid (HCOOH, Ka = 1.8 x 10-4, Molar Mass = 46.03 g/mol) has a pH of 2.70. Calculate initial concentration of formic acid in this solution. If I used this concentration to make 550 mL of solution, how many grams of formic acid would I need?  

[HCOOH]0=0.024

I need 0.608 g

400

What volume in mL of a 0.244 M solution of the strong acid HCl must be added to completely neutralize 75.0 mL of a 0.182 M solution of the strong base NaOH?

55.94 mL

500

C6H5NH3ClO2

Kb for Aniline is 3.8 x 10-10

Ka for Chlorous Acid is 1.2 x 10-2

Acidic

500

Aluminum Hydroxide is an amphoteric substance. It fits the definition of lewis acid and base. Write a reaction showing Al(OH)acting as a base and acid?

Acid:  Al(OH)3 +3H---> Al3+ + 3H2O

Base:  Al(OH)3 + OH--->  Al(OH)4-

500

Label All substances in the reaction

Al(H2O)63+ + H2O ⇌ H3O+ + Al(H2O)5(OH)2+


Acid Al(H2O)63+

Base H2O

Conjugate Base Al(H2O)5(OH)2+

Conjugate Acid H3O+

500

I dissolve 8.96 g of NaN3 in 675 mL of water. What is the pH. (Ka for HN3 is 1.9 x 10-5, molar mass = 65.01 g/mol)

pH = 9.02

500

What is the effective pH range for an acetic acid (Ka=1.8 10-5) and sodium acetate buffer System.

3.74-5.74

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