![noeltan12031](/avatars/43118.jpg)
noeltan12031
21.12.2019 •
Chemistry
Suppose of copper(ii) acetate is dissolved in of a aqueous solution of sodium chromate. calculate the final molarity of acetate anion in the solution. you can assume the volume of the solution doesn't change when the copper(ii) acetate is dissolved in it. be sure your answer has the correct number of significant digits.
Solved
Show answers
More tips
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- S Style and Beauty How to Get Rid of Peeling Nails: Natural Remedies...
- S Science and Technology Understanding Magnetic Storms: A Guide to This Natural Phenomenon...
- F Family and Home What is Most Important in Men s Lives?...
- G Goods and services Which TV is better - LCD or Plasma?...
- C Computers and Internet Are there special gaming mice?...
- G Goods and services LED-подсветка в LCD-телевизорах: 5 причин, почему она лучше других технологий...
- C Computers and Internet Keep Your Mouse Pad Clean: The Right Way to Clean It?...
Answers on questions: Chemistry
- B Biology What is known as photosynthesis...
- M Mathematics Find tlfe midpoint of the segment with the given endpoints: 1) (2, -6), (10,4)...
- M Mathematics 3. Round off the following to 2 d.p b) 3.0037b) 99.996 ...
- C Chemistry The work done on a machine, the product of the input force and the distance through which the force is exerted. A- Work, input B- Work, output C- Mechanical Advantage D- Power...
- C Computers and Technology Dylan is an IT consultant brought in to assess the maturity of risk management practices at an organization using the National Institute for Standards and Technology (NIST)...
Ответ:
0.0714 M for the given variables
Explanation:
The question is missing some data, but one of the original questions regarding this problem provides the following data:
Mass of copper(II) acetate:![m_{(AcO)_2Cu} = 0.972 g](/tpl/images/0428/7375/efd2e.png)
Volume of the sodium chromate solution:![V_{Na_2CrO_4} = 150.0 mL](/tpl/images/0428/7375/93a44.png)
Molarity of the sodium chromate solution:![c_{Na_2CrO_4} = 0.0400 M](/tpl/images/0428/7375/da831.png)
Now, when copper(II) acetate reacts with sodium chromate, an insoluble copper(II) chromate is formed:
Find moles of each reactant. or copper(II) acetate, divide its mass by the molar mass:
Moles of the sodium chromate solution would be found by multiplying its volume by molarity:
Find the limiting reactant. Notice that stoichiometry of this reaction is 1 : 1, so we can compare moles directly. Moles of copper(II) acetate are lower than moles of sodium chromate, so copper(II) acetate is our limiting reactant.
Write the net ionic equation for this reaction:
Notice that acetate is the ion spectator. This means it doesn't react, its moles throughout reaction stay the same. We started with:
According to stoichiometry, 1 unit of copper(II) acetate has 2 units of acetate, so moles of acetate are equal to:
The total volume of this solution doesn't change, so dividing moles of acetate by this volume will yield the molarity of acetate:
Ответ:
The atoms in the green boxes are the same element while the others in the red circles are of different elements.
Explanation:
Atoms of the same element MUST have the same number of protons. The number of neutrons may vary in the case of ISOTOPES (in which case the green labelled atoms are isotopes). Both red labelled atoms have a different number of protons from the other two.