thien030607 thien030607
  • 02-08-2021
  • Chemistry
contestada

cho 6,5 g Zn tác dụng với dung dịch chứa 12g HCl. Thể tích khí H2 ( ở đktc ) là

Respuesta :

nhinguyenthao62
nhinguyenthao62 nhinguyenthao62
  • 02-08-2021

Answer: nHCl = 12/36,5= 0,38(mol)

nZn = 6,5/65 = 0,1(mol)

Ta có pt: Zn + 2HCl --> ZnCl2 + H2

Vì 2n Zn = 0,2 < n HCl = 0,38 nên HCl dư

Theo PTHH :

n H2 = n Zn = 0,1(mol)

V H2 = 0,1.22,4 = 2,24(lít)

Explanation:

Answer Link

Otras preguntas

The graph below was drawn with output on the vertical axis and input on the horizontal axis. What does this graph indicate about the relationship between the in
at the end of one performance the total that isaac received was 750. THIS INCLUDED A TIP FOR THE USUAL FEE OF 649 WHAT PERCENT WAS THE TIP
The cabin is ______. remote remoter remotest
what does a writers philosophical assumption refer to
What is 13 nickels combined with 6 dimes?
In the study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researc
The excretory organs found in flatworms and earthworms are called _____. a)kidneys b)Malpighian tubules c)nephridia d)nephrons
Which answer BEST supports the statement, "China's government can be considered an Oligarchy"?
explain how to divide an amount by 3
The _______ of a song are often referred to as stanzas. A. measures B. verses C. beats D. notes