Balance the following chemical equation if necessary:
V2O5 (s) + HCl (aq) ---> VOCl3 (s) + H2O (l)

Hey there!

V₂O₅ + HCl → VOCl₃ + H₂O

Balance V.

2 on the left, 1 on the right. Add a coefficient of 2 in front of VOCl₃.

V₂O₅ + HCl → 2VOCl₃ + H₂O  

Balance O.

5 on the left, 3 on the right. Add a coefficient of 3 in front of H₂O.

V₂O₅ + HCl → 2VOCl₃ + 3H₂O  

Balance H.

1 on the left, 6 on the right. Add a coefficient of 6 in front of HCl.

V₂O₅ + 6HCl → 2VOCl₃ + 3H₂O  

Balance Cl.

6 on the left, 6 on the right. Already balanced.

Our final balanced equation:

V₂O₅ + 6HCl → 2VOCl₃ + 3H₂O  

Hope this helps!

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l