20. check all the properties that apply to a base such as soapy water or bleach or ca(oh)2. *
3 points
taste bitter
taste salty
taste sour
have low ph's - less than 7
have high ph's - more than 7
feel slippery
react with metals to form hydrogen gas

um i think it might be a car?

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