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
user100 [1]
3 years ago
12

Calculate the ph of a solution that is 0.6 m in sodium acetate and 0.2 m in acetic acid. ka = 1.8 × 10−5 for acetic acid. 1. ph

= 4.3 2. ph = 4.7 3. ph = 5.2 4. ph = 2.7 5. ph = 5.6
Chemistry
1 answer:
Arte-miy333 [17]3 years ago
4 0
      0.53 x 200ml = 106 ml of the pH 9.0 buffer + 94 ml of the pH 10 buffer gives the desired solution 
<span>  </span>
You might be interested in
Draw the products of the complete hydrolysis of an acetal. Draw all products of the reaction.
jolli1 [7]

Answer: the product is ketone or aldehyde

Explanation:

The first step is the conversion of acetal to hemiacetal in the presence of H3O+/ ROH, and then the final conversion of hemiacetal to ketone/aldehyde using

H3O+/ ROH...

Attached is the structural conversion

8 0
3 years ago
How is it that when a salt sample dissolves in water, the delta S for the process is positive?
Bess [88]

Answer:-

Water is highly ordered. In water each oxygen atom is connected to others around it through hydrogen bonding via bridging hydrogen atoms. When a salt like NaCl is dissolved, some of these Hydrogen bonds break.

When a salt like NaCl dissolves in water, the NaCl breaks in to ions Na+ and Cl-.

The water molecules now surround these ions.

The slightly negative oxygen end of water molecule gets near the Na+, while the slightly positive Hydrogen of water molecule gets near the Cl-.

So before salt sample dissolve, the water molecules were highly ordered due to hydrogen bonding. Now after salt dissolve there is a decrease in order and thus an increase in disorder of the water molecules.

Due to increase in disorder, entropy which is a measure of disorder increases. Since entropy increases, delta S for the process is positive.

4 0
3 years ago
For her school Science Fair, Alyssa designs an experiment to learn more about erosion. Her experimental set up is shown below. W
shutvik [7]

Answer:                                                                                                                                

if I am going to answer I need the set up

Explanation:

please show the set up and I will answer the question

8 0
3 years ago
Consider that calcium metal reacts with oxygen gas in the air to form calcium oxide. suppose we react 7.43 mol calcium with 4.00
Natali [406]
The balanced chemical equation for the above reaction is as follows;
2Ca + O₂ --> 2CaO
stoichiometry of Ca to O₂ is 2:1
this means that 2 mol of Ca reacts with 1 mol of O₂.
If O₂ is the limiting reactant, 
4 mol of O₂ should react with (4x2) - 8 mol of Ca
however only 7.43 mol of Ca is present. Therefore Ca is the limiting reactant.
7.43 mol of Ca reacts with - 7.43/2 = 3.715 mol of O₂
therefore there's excess O₂₂ remaining after the reaction
Since Ca is the limiting reactant, it is fully used up in the reaction and there is no Ca remaining after the reaction is completed.


4 0
3 years ago
3. Why didn't other scientist claim that there was an irwisible crystal layer around the Moon become widely accepted?
Oksana_A [137]
What is most widely accepted today is the giant-impact theory. It the Moon formed during a collision between the Earth and another small planet, about the There may indeed be several objects in orbit around Earth.
6 0
2 years ago
Other questions:
  • Which activity performed by a chemist is primarily based on an understanding of physics?
    13·2 answers
  • What are isoelectronic and isostructural species?
    12·1 answer
  • URGENT HELP PLEASE what is an isotope? And how do you calculate isotopes
    13·1 answer
  • Please help meee with this question
    10·2 answers
  • Is the oxygen you breathe brand new
    13·1 answer
  • Which of the following is a correct description of a double bond between two carbon atoms?
    9·2 answers
  • 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
  • I’m not sure how to do this, please help. It’s a mole to mole stoich worksheet.
    13·1 answer
  • How do we think that Mars lost atmospheric gas?
    14·1 answer
  • Give the chemical symbol or name for each of the following elements, as appropriate: (a) carbon, (b) nitrogen, (c) titanium, (d)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!