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When the ink is sprayed onto a porous material the water in the ink reacts with carbon dioxide in the air to form carbonic acid. The carbonic acid then reacts with the sodium hydroxide in a neutralization reaction to form sodium carbonate. Neutralizaton of the base causes a color change of the indicator and the stain disappears:
Carbon dioxide in the air reacts with water to form carbonic acid:
CO2 + H2O -> H2CO3
The neutralization reaction is sodium hydroxide + carbonic acid -> sodium carbonate + water:
2 Na(OH) + H2CO3 -> Na2CO3 + 2 H2O
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoYou may see a wet spot after it goes away, but that will go away too. For disappearing ink the results may vary so test it on a piece on old fabric first to see if it will completely go away.
Wiki User
∙ 14y agoBy holding the paper which has been written on close to a candle flame.
use lemon juice lightly smudged on paper with cotton or paper towel
Wiki User
∙ 12y agoNow a days you use UV light.
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How can ink stains be removed from fabric?
It depends on how much ink and what type of ink. I wear lab coat and usually work with black pen ink lines or occasional blot of ink. With this smaller amount ink, hairspray works best for me. I will work it or soak it depending on the ink's response to the stain.
What is vanishing color?
Disappearing ink is a water-based acid-base indicator (pH indicator) that changes from a colored to a colorless solution upon exposure to air. The most common pH indicators for the ink are thymolphthalein (blue) or phenolphthalein (red or pink). The indicators are mixed into a basic solution that becomes more acidic upon exposure to air, causing the color change. Note that in addition to disappearing ink, you could use different indicators to make color-change inks, too.
What is the method for the disappearing cross experiment?
the disappearing cross method is a method used when observing how the concentration of a chemical affects the rate of reaction.
How do you get ink stains out of carpets?
You would probably have to get a wet towel and wash it out. If it doesn't work, try using soap.
How do you use Dixon pink n ink erasers to remove ink?
They won't remove ink unless it is eraseable ink.
Can you put anything on a baseball to stop sharpie ink from soaking into the hide and disappearing?
Boy, put some Robitussin.
Is disappear an adjective?
No, disappear is a verb. The present participle disappearing is sometimes an adjective.(In Latin America, the Spanish word for "disappear" is used as a verb to mean extra-legal murder or detention, and the word disappeared is an adjective.)
How can ink stains be removed from fabric?
It depends on how much ink and what type of ink. I wear lab coat and usually work with black pen ink lines or occasional blot of ink. With this smaller amount ink, hairspray works best for me. I will work it or soak it depending on the ink's response to the stain.
What is vanishing color?
Disappearing ink is a water-based acid-base indicator (pH indicator) that changes from a colored to a colorless solution upon exposure to air. The most common pH indicators for the ink are thymolphthalein (blue) or phenolphthalein (red or pink). The indicators are mixed into a basic solution that becomes more acidic upon exposure to air, causing the color change. Note that in addition to disappearing ink, you could use different indicators to make color-change inks, too.
Why do printers need ink?
They need ink to make them work.If there is no ink in it,it will not work.Its the same as asking; Why do pens need ink to work? Its pretty obvious.
Where does tattoo ink come from?
Ink comes from the latin work "inka" which means "decendent of the octopus" tattoo ink comes from underwater squids and octopuses Ink comes from the latin work "inka" which means "decendent of the octopus" tattoo ink comes from underwater squids and octopuses
You buy these for your pen and it fills with ink?
The thing that you can buy for your pen is an Ink Cartridge. And the thing that makes your pen work is an Ink Cartridge
How does a marker work?
it barfs ink
How do ink cartridges work?
The print head and circuitry, are contained on the ink cartridge itself.
Why the Ink pen is not used in Space?
Gravity is what forces an ink pen to work. The ink flows downward due to gravity. In an area without gravity (like space) the pen wouldn't work.
How do you make your own ink stamps?
Food coloring and sponges is about the only thing I can think of that would work as an ink pad. Fill the sponge with food coloring and it would work as ink pad.
Which inks work in the Epson Stylus 440 printer?
The epson S020093 Black ink cartridge and Epson Tri Colour ink cartridge Epson S187093 Black Ink Cartridges & Epson S191089 Color Ink Cartridges work in the Stylus 440.
