[Magus]

I´ve been trying all night to solve this problem, unfortunately all of the results i obtained where far away from the options given, i think the whole procedure I'm using is wrong, can someone please help me whit this?

How many grams of nitric acid with 80% purity are required to obtain 8.75 g of dinitrogen monoxide? If zinc reacts with nitric acid to produce water and zinc nitrate dinitrogen monoxide

The options .. answers given


a.31
b.30
c.25
d.6.3

[sjb]

I´ve been trying all night to solve this problem, unfortunately all of the results i obtained where far away from the options given, i think the whole procedure I'm using is wrong, can someone please help me whit this?

How many grams of nitric acid with 80% purity are required to obtain 8.75 g of dinitrogen monoxide? If zinc reacts with nitric acid to produce water and zinc nitrate dinitrogen monoxide

The options .. answers given


a.31
b.30
c.25
d.6.3

What's the balanced equation for the reaction?

[Borek]

8.75 g of dinitrogen monoxide

Bolding mine - if N₂O is what they want, none of the answers given is correct.

However, one of the answers is correct if they really meant mononitrogen dioxide (NO₂).

EBAS is great for checking such things 

[Arkcon]

Actually Borek: I read in a chemistry book a long time ago, that dilute nitric acid can produce N₂O when it acts on copper.  Sorry I can't find a citation for that, and I don't think its in Pauling's Chemistry, but every other bit of weird chemistry trivia is, so why not this tidbit, I will have to check.  Anyway, its also possible that this question is just a made up one, to test the student.  Those do seem a little unfair, but there's only so many reactions you can put in a textbook without being redundant.  Or perhaps its just a typo, like you said.

At any rate, Magus:, just because you have a multiple guess question, doesn't really make the chemistry easier.  You will have to work straight through.  Starting with a balanced chemical equation for the reaction, as it is described.  If this is a typo, you'll have to prove it with a worked out answer to your instructor.

[AWK]

This printing error comes from "The metallurgists and chemists' handbook" by  Liddell, Donald M. from 1918.
See at Wikipedia for the real reactions that produce N₂O.
With copper you can obtain only NO or NO₂ depending on concentration of HNO₃.