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

D)Decreasing the Volume of H2O

300

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

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?

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

Click to zoom