Explore BrainMass
Share

Chemistry Problems: Equilibrium Concentration of Gas

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

A 3.00 L flask initially contains 1.50 mol of gas A and 0.450 mol of gas B. Gas A decomposes according to:
3A <-> 2B + C
DeltaH = +90kJ mol^-1
The equilibrium concentration of gas C is 0.100 mol/L.

What is the equilibrium concentration of gas A?
What is the equilibrium concentration of gas B?
What is the equilibrium constant K?
If the temperature of the flask was increased, what would happen to the equilibrium concentration of gas A?
What is the H+ in a solution that has a pH of 2.3? Report your answer to 2 significant figures.
The KS of nitrous acid, HN)2 is 4.0 x 10^-4. What is the pH of 0.25 M HNO2? Report your answer to 2 decimal places.

© BrainMass Inc. brainmass.com October 10, 2019, 5:40 am ad1c9bdddf
https://brainmass.com/chemistry/acids-and-bases/chemistry-problems-equilibrium-concentration-gas-513810

Solution Preview

3A --> 2B+C
Molar amount for C: 0.1*3=0.3 mol
Molar amount for A consumed: 0.3*(3/1)=0.9 mol
The remaining molar amount for A: 1.5-0.9=0.6 mol
Q1: ...

Solution Summary

The expert examines equilibrium concentrations of gas for chemistry problems.

\$2.19