2. What volume of CO2 in litres must be dissolved in 300 cm of water in order to produce 0.20 moldm of carbonic acid solution? [Assume molar volume of gas is 22.4L]

l dont know l am s sorry

the answer is barium and copper bromide

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