Question

General Chemistry Challenge Problem: Molecular Geometry and Bonding Theories

A compound composed of 2.1% H, 29.8% N, and 68.1% O has a molar mass of approximately 50g/mol.
(A). What is the molecular formula of compound?
(B). What is its Lewis structure if H is bonded to O?
(C). What is the geometry of the molecule?
(D). What is the hybridization of the orbitals around the N atom?
(E). How many sigma and how many pi bonds are there in the molecule?

Answer 1

What do you think the first step is here?

Answer 2

I know the answer. I want to see if you know. You can just tell me the steps.
Free medal and fan.

Answer 3

(A) Oh ok well to find the molecular formula just take integer multiples of the masses of each specific element and divide by 50 then multiply by x100 to find your percentage value if it matches up you have the right molecular formula i believe this comes out to HNO2

Answer 4

Yes, that is correct.
Element grams given x(mol/actual gram)

Answer 5

(B) Lewis structure is this i thnk

Answer 6

2 lone pairs on each oxygen

Answer 7

(C) The geometry would be im assuming bent but that hydrogen is throwing me off.

Answer 8

forgot the lone pair on the nitrogen in the lewis structure

Answer 9

kind of important

Answer 10

(D) 3 areas of electron density so im pretty sure sp2 hybridization

Answer 11

(e) So there would be 3 sigma bonds and 1 pi bond

Answer 12

edited lewis structure

Answer 13

so did i get them right?

Answer 14

B) is correct.
C) yea they just want the electron domain. Oops forgot to tell you. Is it trigonal planar or tetrahedral?
D) is correct
E) is correct

Answer 15

electron domain geometry*

Answer 16

ahh that suddenly makes a lot of sense

Answer 17

Which of the 2 do you think it is?

Answer 18

Trigonal planar and tetrahedral both have bent as their molecular geometry.

Answer 19

I think it is trigonal planar due it only having 1 lone pair, but my knowledge of this has become quite rusty.

Answer 20

Yea it is. It has 3 electron domains on the central atom N.

Answer 21

and it actually fits a trigonal planar geometry if you look at it.

Answer 22

Not 4 because H is not bonded to N.
Nice job!
All correct!

Answer 23

alrighty cool :P

Answer 24

I have more challenging questions, but most of them are in yahoo answers.
Took me a while to figure what problems to post.

Answer 25

I'll post another in like 15 minutes if you got time and want to solve

Answer 26

i mean i didnt google that question and sure sounds good

Answer 27

id rather make a mistake and learn from what i miss

Answer 28

Yea, I know you did not because you had a fast response rate and I picked the one that I could not find in Google lol.