A sample of peanut oil weighing 2g is added to 25ml of 0.4M koh. After saponification is complete, 8.5ml of 0.28M hes04 is needed to neutralize excess of koh. The saponification number of peanut oil

I do not still understand Pls clearly step by step for me. Thank a lot The answer 146.76

Ken, I did step by step and explained every step as I went. Step by step what do you not understand?