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Lemon juice. It has a pH of 2.3, whereas Orange Juice has a pH of 3.3. What is being cleaned off is the CuO and CuCO3 that forms on the penny. Both O2- and CO32- are bases, so the stronger the acid, the more effectively they will be reacted away. I did a quick online search for the pH of Grape Juice but did not find anything, but given that it lacks the sour taste that orange and lemon juice have (an indicator of acidity), I would have to assume that it is not as acidic as either lemon or orange juice.
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∙ 15y ago
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Why does grape juice clean pennies best?
Grape juice is not the best choice for cleaning pennies. Lemon juice cleans pennies best due to its acidity.
Why does grape juice cleans pennies?
cuz ur black niggie
Which juice cleans pennies best orange juice or grapefruit?
orange works better because it has more citric acids than apple juice does, all the apple juice will do is make the penny stickier.
Why does orange juice cleans dirty pennies?
Because the acid contents within the juice
What cleans a penny best apple orange or grape juice?
apple dose
Does Apple juice clean pennies best or does granpe and orange?
Orange juice would clean pennies best. This is because it is acidic. Apple, and grape juice will not work as well.
What juice cleans pennies best between orange juice apple juice or fruit punch?
apple juice... I did that as a science fair project
Which juice cleans pennies the best science fair project information?
Most likely Citrus such as lemon or orange.
Does lemon juice cleans pennies better than bleach?
yes lemon juice cleans pennies better than bleach
What juice cleans copper pennies best?
lemon juice
What other than lemon juice can clean pennies?
tomato juice, orange juice, grape fruit juice, lemon juice, lime juice, and pickle juice also can clean a penny
Is grape juice healthier than orange and apple juice?
Yes grape juice is healthier than orange and apple juice
