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Vinegar and soap as an Alternative Weed Killer

Introduction A. Background of the study
Since ancient times, vinegar has been used for different purposes like cleaning, cooking, gardening, etc. In gardening, it is used as a herbicide. Vinegar is an important element in organic gardening, as it has the capability of killing the weeds. Vinegar contains natural acetic acid which helps in destroying the weeds. Acetic acid (systematically named ethanoic acid is an Acetic acid (systematically named ethanoic acid is an organic compound with the chemical formula CH3CO2H (also written as CH3COOH or C2H4O2). It is a colourless liquid that when undiluted is also called glacial acetic acid. Acetic acid is the main component of vinegar (apart from water; vinegar is roughly 8% acetic acid by volume), and has a distinctive sour taste and pungent smell. Besides its production as household vinegar, it is mainly produced as a precursor to polyvinylacetate and cellulose acetate. Although it is classified as a weak acid, concentrated acetic acid is corrosive, and attacks the skin with the chemical formula CH3CO2H (also written as CH3COOH or C2H4O2). It is a colourless liquid that when undiluted is also called glacial acetic acid. Acetic acid is the main component of vinegar (apart from water; vinegar is roughly 8% acetic acid by volume), and has a distinctive sour taste and pungent smell. Besides its production as household vinegar, it is mainly produced as a precursor to polyvinyl acetate and cellulose acetate. Although it is classified weak acid concentrated acetic acid is corrosive, and attacks the skin. More the content of acetic acid, more strong is the weed killer. For culinary purposes, the content of acetic acid in the vinegar is merely 5%. The content of acetic acid in regular household vinegar is also 5%. This might work on young weeds but, for killing the mature ones, large amount of vinegar is required. Another option for killing mature weeds is by repeatedly spraying the weeds with vinegar having acetic acid with 5% concentration. In order to increase the concentration of acetic acid to 15%, you can distill the vinegar. In order to increase the concentration of acetic acid to 30%, subject the vinegar to freeze evaporation. Acetic acid is biodegradable and does not bio accumulate. Hence, it does not have a negative effect on the soil. When vinegar is sprayed on the plants, the pH level of the soil decreases, but within 48 hours the pH level returns to normal.

B. Objectives
To produce weed killers out of vinegar
To determine how vinegar can kill such kinds of weeds
To identify the positive and negative effects of vinegar

C. Statement if the problem
What is the effect of vinegar and dish soap as killers for certain weeds?