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

How can we use data from a randomized experiment to compare two treatments?
Find the value of x
What are the zeros of the function f(x)=x2+2x−35 ? Enter your answers in the boxes. The zeros of f(x)
Based upon the context the word unlawful most likely means
Solve by factoring x3 + 8x2 + 5x − 14 = 0.
Which letter correctly identifies the labled structure within the plant cell? mitochondria
Jessica assembles a product that requires the insertion of 3 aluminum pins. She can assemble approximately 15 products per hour. Approximately how many pins wil
I need help with this. Thanks!
PLZ HELP THIS IS ON MY FINAL 15 PTS WILL GIVE BRAINLIEST TO FIRST PERSON THAT GETS IT RIGHT Read the following passage: Just outside the frame there has to be
Match the theory to the statement that best describes it. 1. big bang it's like an inflating and deflating balloon that never stops 2. steady state agrees w