Question

help....CHEMISTRY....
Work the entire problem from the beginning.

How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is:

C + H2O → CO + H2

The atomic mass of C is 12.01 g/mole. The atomic mass of H2 is 2.016 g/mole.

grams of hydrogen
823
5.7
14

Answer 1

It's a simple stoichometry problem:

Start by converting the mass of carbon to moles using: \(n=\dfrac{m}{M}\)

The follow this:
--------------------------------------------------
outline: Using the stoichiometric coefficients to find moles produced.

e.g. for a general reaction:

\(\color{red}{a}A + \color{blue}{b}B\) \(\rightleftharpoons\) \( \color{green}{c}C\)

where upper case are the species (A,B,C), and lower case (a,b,c) are the coefficients ,

\(\dfrac{n_A}{\color{red}{a}}=\dfrac{n_B}{\color{blue}{b}}=\dfrac{n_C}{\color{green}{c}}\)


From here you can solve for moles of product.
--------------------------------------------------------
For example: if you have moles of B= 2, how many moles of C did you produce?

solve algebraically: \(\dfrac{2}{\color{blue}{b}}=\dfrac{n_C}{\color{green}{c}}\rightarrow n_c=\dfrac{2*\color{green}{c}}{\color{blue}{b}}\)
--------------------------------------------------------
To convert moles back to mass, use the relationship:

\(n=\dfrac{m}{M}\)

where, M=molar mass, m=mass, and n= moles.

Answer 2

Aaron, this is a masterly explanation. I would like to frame this and display it! Thanks

Answer 3

Thank you. it's something i wrote for someone else before so i just "copy and paste it".

Answer 4

So the answer is?