[acej]

Here's a question I'm having an issue with... I setup a balanced equation of 2NB + H2 --> 2NbH (dont know if its right)


Than I setup a rice table to find the moles of each product and reactant. I than plugged the amount of moles I had from h2 into P=nRT/V. The answer is wrong but I have no idea why or how to star a problem like this off.


In one experiment, 0.780 g Nb (s) was sealed in a 28.0 mL glass tube at 25°C under 6.33 atm of hydrogen gas, H2. After reacting with the hydrogen for one week, all of the niobium had been converted to niobium hydride, NbH. Calculate the final pressure of hydrogen gas in the system at 25°C.

[Dan]

The answer is wrong but I have no idea why or how to star a problem like this off.

Can you show what you've done so far, then we can work out where you went wrong.

[billnotgatez]

Is it NbH or NbH₅

*  Name: Niobium
    * Symbol: Nb
    * Atomic number: 41
    * Atomic weight: 92.90638 (2)
    * Standard state: solid at 298 K
    * CAS Registry ID: 7440-03-1

   

    * Group in periodic table: 5
    * Group name: (none)
    * Period in periodic table: 5
    * Block in periodic table: d-block
    * Colour: grey metallic