cheesebinh2
cheesebinh2 cheesebinh2
  • 14-08-2021
  • Chemistry
contestada

Nhiệt phân hoàn toàn 1,88g Cu(NO3)2.Khí bay ra cho hấp thụ vào H2O tạo thành 2 l dd A. Dd A có pH= ?

Respuesta :

tuyetanhduong2004
tuyetanhduong2004 tuyetanhduong2004
  • 14-08-2021

Answer: theo mình thì mình làm như sau

cu(no3)2 nhiệt phân hết

\Rightarrow nNO2= 0,02mol

nO2=0,005mol

khi hấp thụ O2 và NO2 vào nước ta có

2NO2 + 1/2 O2\Rightarrow 2HNO3

phản ứng là vừa đủ nên

nHNo3= 0,02 mol

pH HNO3=2

khi cho 0,001mol NaOH vào thì phản ứng trung hòa

H+ + OH- \Rightarrow H20

nHNO3=0,02/20=0,001

nhận thấy nH+ =nOH- nên phản ứng vừa đủ

pH của dd Y=7

theo mình giải là như vậy

Explanation:

Answer Link

Otras preguntas

what would happen to a vacant lot in your community if it were left alone for the next 25 years.
Which of the following chemical formulas shows a covalent compound? A.CO2 B.MgO C. NaCl D.HBr
What are the three most important inventions created during the Neolithic revolution ( the agricultural revolution) ?
NEED HELP ASAP <3 Some consider Chinua Achebe the __________ of African literature. A.) father B.)destroyer C.)stepchild D.)only writer
The ratio of 3 to 4 can be written in all the following ways except _______. 4/3 3/4 3:4 three-fourths
Count by ones from 368 to 500. change for a larger unit if. necessary.When counted from 368 to 500
Cali has 750 pounds of beans and 14 pounds of wings give me the correct answer
What types of substances can pass through the lipid bilayer?
What does diatomic element mean and what exactly does it do?
What is the difference between catabolic and anabolic pathways?