Info: The carboxylic groups in a fatty acid can be neutralized by the addition o
ID: 1016276 • Letter: I
Question
Info:
The carboxylic groups in a fatty acid can be neutralized by the addition of potassium hydroxide (KOH). The neutralization reaction is the following:
CH3-(CH2)n-COOH + KOH --> CH3-(CH2)n-COO- K+ + H2O
The mass Index (Ia) is defined as the ratio between MKOH, mass (expressed in mg) of KOH needed to neutralize all the fatty acids, and MFA, the mass of fatty acids (expressed in mg) that was neutralized. Ia = 103 x (MKOH/MFA)
Establish the mathematical equation that links MKOH (the mass of KOH that neutralize the unknown fatty acids), MWKOH(the molecular weight of KOH) and mKOH (the number of moles contained in MKOH). Show your reasoning.
Explanation / Answer
Isn't your question very simple. You are just asking the relation between number of moles, mass and molar mass
number of moles = mass/molar mass
mKOH = MKOH / MWKOH