Answer:
After the concentration of Hâ‚‚ is decreased
H₂+↑Br₂⇒↓2HBr
After the concentration of HBr is increased
↑H₂+↑Br₂⇒2HBr
Explanation:
After the concentration of Hâ‚‚ is decreased, there will not be enough Hâ‚‚ to from HBr, so the concentration of HBr will decrease, and the concentration of Br will increase.
After the concentration of HBr is increased, there would be more HBr that will give more Hâ‚‚ and Brâ‚‚.