Shannon Lush gets it wrong #8

Amongst the many errors in the advice that Shannon Lush gave in her advice on 6PR was her advice not to use Oven Cleaners to clean ovens, but to use a mixture of bicarb soda/vinegar to clean ovens.

In other words what we are expected to believe is that the chemists who have designed products specifically to clean ovens don’t know what they are doing and that she, with no scientific qualifications whatsoever, knows better, and of course the very opposite is the case.
Oven cleaners work by a chemical process called saponification. That is, they literally convert the oil and grease in your oven to a soap.

Here is the reaction

This is why it all wipes up with a sponge so easily afterwards – you’re literally wiping up soap.

Bicarb will not do this as it isn’t alkaline enough, and especially after it has been neutralised by adding vinegar to it.

5 thoughts on “Shannon Lush gets it wrong #8

    • They neutralize each other. Vinegar is a weak acid and bicarb is a weak base. It’s explained here. Vinegar has a few uses in the home, but bicarb has virtually no cleaning properties whatever. People think this mixture cleans because it fizzes and people associate fizzing and foaming with cleaning. 100% placebo effect

  1. Hope this is where I posted the last query (re. relative effectiveness of carbonic acid formed by reacting vinegar or citric acid with bicarb soda)…

    Pondering this a bit more, the fizz must actually be liberating carbon dioxide from the mixture, so even if there is carbonic acid left in the liquid, it would have to be more dilute than the vinegar (acetic acid) or citric acid put in at the beginning, right?

    Just want to make sure I cover all the bases! (…even if they’re actually acids!) ;-)

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