1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kolbaska11 [484]
3 years ago
14

What is the pH of 0.30 M ethanolamine, HOCH2CH2NH2, (Kb = 3.2 x 10−5)?

Chemistry
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

pH= 11.49

Explanation:

Ethanolamine is an organic chemical compound of the formula; HOCH2CH2NH2. Ethanolamine, HOCH2CH2NH2 is a weak base.

From the question, the parameters given are; the concentration of ethanolamine which is = 0.30M, pH value= ??, pOH value= ??, kb=3.2 ×10^-5

Using the formula below;

[OH^-]=√(kb×molarity)----------------------------------------------------------------------------------------------------------(1)

[OH^-] =√(3.2×10^-5 × 0.30M)

[OH^-]= √(9.6×10^-6)

[OH^-]=3.0984×10^-3

pOH= -log[OH^-]

pOH= -log 3.1×10^-3

pOH= 3-log 3.1

pH= 14-pOH

pH= 14-(3-log3.1)

pH= 11+log 3.1

pH= 11+ 0.4914

pH= 11.49

You might be interested in
Which of the following is not a reason childhood friendships are important to development?
never [62]

Answer:

B

Explanation:

6 0
3 years ago
Read 2 more answers
Sayid recorded the temperatures of four substances in a chart. which conclusion is best supported by the data?
balandron [24]
The conclusion best supported by the data can either be high temperature, low temperature, and normal temperature. Since there are diverse substances included in the chart, It is expected to also have diverse temperatures. 
4 0
3 years ago
What is the formula for dihydrogen tetraoxide
Veseljchak [2.6K]

It's been a while... but I'm <em>pretty</em> sure it's

H₂O₄

3 0
3 years ago
Products made of plastic can last a very long time. Explain both the positive and negative effects of plastic being long-lasting
Vinil7 [7]
Because plastic products are durable, they can last for a long time. This makes them affordable because they do not have to be replaced often. On the other hand, the popular use of plastics means that many plastics are thrown away. Plastics litter the ocean, causing harm to marine birds and mammals. Plastic breaks down into plastic dust, which can last for up to a thousand years.
8 0
3 years ago
54
skelet666 [1.2K]

Answer:

less than 5 centimeters because it is a nonvascular plant

Explanation:

Mosses are a group of plants under the division Bryophyta. They are said to be the most primitive plant life in existence as they lack true roots, stems and leaves. They also lack vascular system, hence, they are regarded as non-vascular plants. They usually grow in very small sizes (about 0.2 - 10cm).

According to this question, Penny bought a club moss plant for her water garden and needs to know how tall the plant will grow so she know how much space it will need. Since it is a miss plant that lacks vascular tissues i.e. nonvascular, it will likely grow less than 5 centimeters in height.

7 0
2 years ago
Other questions:
  • A famous naval battle that was crucial in ending the Persian threat to the Greeks took place at
    9·1 answer
  • What are dispersion forces
    11·2 answers
  • Hydrogen is unique among the elements because ________. 1. It is not really a member of any particular group. 2. Its electron is
    7·1 answer
  • What is the theoretical yield of so3 produced by the quantities described in part a? express your answer numerically in grams?
    8·1 answer
  • A(n) (blank) material let's light pass through freely
    9·2 answers
  • How do you over-saturate a liquid
    12·1 answer
  • Which of the following sequences lists the relative sizes of particles in a water mixture from smallest to largest?
    5·1 answer
  • A mixture of gases at a total pressure of 95 kPa contains nitrogen, carbon dioxide and oxygen. The partial pressure of carbon di
    5·2 answers
  • Which of the following changes in the state of a substance results in an increase in the entropy?
    14·2 answers
  • Which of the following pairs of elements would form a covalent compound?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!