How to solve this problem

When completely dissolved, 3.2 g of copper in h. HNO3 released 3 g of nitric oxide. What is the mass fraction of NO2 output from the theoretical possible?
There are 6 answers
Common Miracle
Common Miracle
Answered on January 20, 2015 15:31
You must first withdraw the reaction. Nitric oxide is N02. Сu + 4HN03 -> Cu (N03) 2 + 2N02 + 2Н20 Then decide the formulas
Best
best_or_nothing
best_or_nothing
Answered on January 20, 2015 15:59
Julia, good afternoon! I can only suggest the following. There is little that I remember, therefore. You write the reaction, then calculate the formulas for the number of released N02, then translate into grams - you get the theoretically possible.
Best
best_or_nothing
best_or_nothing
Answered on January 20, 2015 16:00
Reaction equation: Cu + 4HNO3 = Cu (NO3) 2 + 2NO2 + 2H2O
Best
best_or_nothing
best_or_nothing
Answered on January 20, 2015 16:07
1. Find the amount of substance si. The number of things. = Mass of substance / molar mass = 3.2 / 64 = 0.05 mol. 2. According to the equation of the reaction, the quantity of a gas substance is twice as large (a factor of two before NO2), hence the quantity of a gas substance is 0.05 * 2 = 0.1 mol.
Best
best_or_nothing
best_or_nothing
Answered on January 20, 2015 16:40
3. Find the theoretical mass of the gas. Mass = quantity of substances. * Molar mass = 0.1 mol * 46 g / mol = 4.6 g. 4.


Related news

How to solve this problem image, picture, imagery


How to solve this problem 33


How to solve this problem 28


How to solve this problem 27


How to solve this problem 55


How to solve this problem 1


How to solve this problem 73


How to solve this problem 88


How to solve this problem 21


How to solve this problem 42


How to solve this problem 93