According to the chemical formula shown below, all of the following elements are found in phosphoric acid EXCEPT A. Hydrogen
B. Oxygen
C. Phosphorus
D. Potassium
Please asap i need help

12 is it do you think so

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

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