For avoiding the reduction of the residual hardness, incomplete precipitation and slow reaction, The reaction is carried out at __________ temperature.
(a) 30-40^oC
(b) 40-50^oC
(c) 50-60^oC
(d) 60-70^oC
I got this question during an interview.
My question is taken from Lime Washing Soda Method topic in division Water of Applied Chemistry