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

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

There are 5 red balls,6 white balls and 7 green balls in a box.If one ball is taken without looking,what is the probability that it is white?

Which is an example of bivariate data?(1) age of students in a club(2) grade level and age of students in a school(3) type of lunch each student orders at schoo

what are some interesting facts about the great sandy desert?

Why did Pres. Truman believe that political change would come to the Soviet Union?A. The failures of the Soviet Nuclear programB. The Appeal of freedom and the

@stewyWhich sentence uses a verb that agrees with its compound subject? A.Waiters and waitresses serve the diners at the banquet.B.cell phones and tablets i

What is the state at which a net force is zero called

The accompanying frequency table indicates the grades on the math midterm in Ms.Dennis' class. In which interval does the median of the date lie?

Which is an example of bivariate data?(1) age of students in a club(2) grade level and age of students in a school(3) type of lunch each student orders at schoo

why did the citizens of Richmond, Virginia feel upset about the actions at Fort Sumter ?

her investment grew 22% to$610 how much did she invest____ ( solve as an equation or fraction)