1) Calculate the pH of the buffer solution made by mixing 60cm^3 of 0.20 moldm^3 solution with 40 cm of sodium hydroxide of oncentration 0.1 moldm cube. Ka - 1.8x10^-5/dm^3.
2)calulate the relative volumes of 1 moldm^-3 solution of ethanoic acid and 1moldm^-3 solution of sodium ethanoate that have to be mixed to give a solution of 4.00. Ka - 1.8x10^-5
3) The solubility of lead chloride at 20 degree celciusis 0.70gm per 100cm^3 of solution. What is the solublity product of this solution?
Please answer them for me.
