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
Daniel [21]
4 years ago
11

A buffer is 0.282 m c6h5cooh(aq and 0.282 m na(c6h5coo(aq. calculate the ph after the addition of 0.150 moles of nitric acid to

1.0 l of the buffer. the pka of c6h5cooh is 4.20.
Chemistry
1 answer:
Sindrei [870]4 years ago
7 0
You have to use the Henderson-Hasselbalch equation. Keep in mind that because the Pka is given the equation changes form slightly:

PH = Pka + log[acid/base]

Step 1 (Figure out the concentrations):

0.282 M of Acid (C6H5OOH) - 0.150 M = 0.132 M of acid
0.282 M of Base (C6HCOO) + 0.150 M = 0.432 M of bas3

Step 2 (Plug into equation):

PH = Pka + log[acid/base]
PH = 4.20 + log[0.132 M/0.432 M]

PH = 3.69

You might be interested in
Does yeast need air to release carbon dioxide
Mashcka [7]
Hello!

Yes, it needs oxygen to metabolize sugars that, in the end, produce carbon dioxide (CO2).
8 0
3 years ago
May someone pls help me with this!
icang [17]

Answer:

Explanation:

1. Chemistry

2. Atoms

3. Anode

4. Cathode

4 0
3 years ago
Palladium (Pd; Z 46) is diamagnetic. Draw partial orbital diagrams to show which of the following electron configurations is con
nexus9112 [7]

Answer : The electron configurations consistent with this fact is, (b) [Kr] 4d¹⁰  

Explanation :

Electronic configuration : It is defined as the representation of electrons around the nucleus of an atom.

Number of electrons in an atom are determined by the electronic configuration.

Paramagnetic compounds : They have unpaired electrons.

Diamagnetic compounds : They have no unpaired electrons that means all are paired.

The given electron configurations of Palladium are:

(a) [Kr] 5s²4d⁸

In this, there are 2 electrons in 's' orbital and 8 electrons in 'd' orbital. From the partial orbital diagrams we conclude that 's' orbital are paired but 'd' orbital are not paired. So, this configuration shows paramagnetic.

(b) [Kr] 4d¹⁰

In this, there are 10 electrons in 'd' orbital. From the partial orbital diagrams we conclude that electrons in 'd' orbital are paired. So, this configuration shows diamagnetic.

(c) [Kr] 5s¹4d⁹

In this, there are 1 electron in 's' orbital and 9 electrons in 'd' orbital. From the partial orbital diagrams we conclude that 's' orbital and 'd' orbital are not paired. So, this configuration shows paramagnetic.

6 0
4 years ago
When the molecules in a body move with increased speed, it's possible that the body will change from a
Norma-Jean [14]
The answer is B
liquid to a gas

8 0
3 years ago
Consider the two electron arrangements for neutral atoms A and B. Are atoms A and B the same element?
Vlad [161]
Technically yes but no because you have to fill the 3s orbital before the 5s orbital.
 
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the volume of a box that has a length of 5 cm a width of 7 cm and a height of 9 cm
    12·1 answer
  • 50cm3 of 1 mol/dm3 HCl at 30°C was mixed with 50cm3 of 1mol/dm3 NaOH at 30°C in a styrofoam calorimeter. The temperature of the
    12·1 answer
  • Magnesium chloride, mgcl2(s) reacts with water vapor to form magnesium oxide, mgo(s) and hcl(
    6·2 answers
  • Consider the following balanced equation for the following reaction:
    8·1 answer
  • What groups of metals are responsible for the color change in a element?
    13·2 answers
  • 28 mL of 0.10 M HCl is added to 60.0 mL of 0.10 M Sr(OH)2. Determine the concentration of OHin the resulting solution.
    7·1 answer
  • What happen if carbon is heated with oxygen?
    12·1 answer
  • 2. Calculate the new molanty of a solution formed when 20 ml of water is added to 100 ml of
    13·1 answer
  • To make an object start moving, you must exert a force in
    7·1 answer
  • Someone please answer i’ll give brainliest
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!