whocaresfasdlaf6748 whocaresfasdlaf6748
  • 12-09-2018
  • Chemistry
contestada

Calculate the mass, in grams, of cucl2 (mw = 134.452 g/mol) required to prepare 250.0 ml of a 6.11 % w/v cu2 (mw = 63.546 g/mol) solution.

Respuesta :

Annainn Annainn
  • 21-09-2018

6.11% w/v of Cu2+ implies that 6.11 g of Cu2+ is present in 100 ml of the solution

therefore,  250 ml of the solution would have: 250 ml * 6.11 g/100 ml = 15.275 g

# moles of Cu2+ = 15.275 g/63.546 g mole-1 = 0.2404 moles

1 mole of CuCl2 contain 1 mole of Cu2+ ion

Hence, 0.2404 moles of Cu2+ would correspond to 0.2404 moles of CuCl2

Molar mass of CuCl2 = 134.452 g/mole

The mass of CuCl2 required = 0.2404 moles * 134.452 g/mole = 32.32 grams

Answer Link

Otras preguntas

Is step 3 correct or would I change 5/2 into a decimal?
Solve this expression. 2.2-0.5(0.6x-1.8)
What is English class for? How is it similar to other classes in high school?
A contractor purchases 4 dozen pairs of padded work gloves for ​$57.12. He incorrectly calculates the unit price as ​$14.28 per pair for the expense report. Wh
Explain the intersections between rapid social change in the early 20th century and gender anxieties.
Which equation defines the graph of y=x^2 after it is shifted vertically 3 units down and horizontally 2 units left?
Which 2-word phrase has the same meaning as ' moved faster ' ?​
I didn't understand the following matrix manipulation, as shown in the attached photo. How was it done?
I need help ASAP There are two fruit trees located at (3,0) and (−3, 0) in the backyard plan. Maurice wants to use these two fruit trees as the focal points for
X+3y+z ifx= 3, y=3, and z = 4