Question

Calculate the concentration of the hydronium ions in the solution of 30mL of 4.5mol/L HBr(aq) diluted to 100mL.​

Answer 1

Answer:

1.35M

Explanation:

HBr present in 30ml solution is (4.5/1000)×30=0.135mole

1 HBr gives 1 Hydronium ion

so in 100 ml solution hydronium ion present= 0.135 mole

in 1000 ml solution hydronium ion present=(0.135÷100)×1000=1.35mole

so the concentration of hydronium ion is 1.35mole/L or 1.35M