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the green patina of copper is desirable
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∙ 16y ago
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Which gas in the atmosphere is responsible for brass getting discolored?
hydrogen sulphide
How does anhydrous copper chloride prevent rust?
it doesn't
What is the formula for getting copper oxide from copper hydroxide?
Cu(OH)2 --> CuO + H2O
In estimation of copper and nickel why we are using volumetric for copper and gravimetric for nickel seperately?
It is simply because they could not be found together!! copper can be estimated by treating with potassium iodide and iodine will be liberated in the reaction which is titrated against sodium thiosulphate during the reaction we will add sulphuric acid to prevent the hydrolysis of copper sulphate and we follow by, adding ammonia to neutralize sulphuric as it may hinder the reation between iodide and copper!! now again we will add acetic acid to neutralize ammonia.. and the indicator is added at the last because it will get absorbed with the iodine!! now atlast we add ammonium, thiocyanate to prevent the excess of iodine getting added to copper iodide. end point is disappearance of blue color.
Why a copper equipment should not possess a small steel bolt?
copper is higher in galvanic series than steel.hence when steel bolt is attached to copper equipment the copper being higher in galvanic series acts as anode getting corroded and steel being lees in galvanic series acts as cathode getting protected. copper equipment gets corroded when steel bolt is attached to it.
Which gas in the atmosphere is responsible for grass getting discolored?
oxygen
Which gas in atmosphere is responsible for brass getting discolored?
oxygen
Which gas in the atmosphere is responsible for brass getting discolored?
hydrogen sulphide
What is the value of a 1998 US copper nickel?
Almost certainly 5 cents. US nickels don't have enough copper in them to look copper-colored. Your coin is most likely discolored due to exposure to heat, chemicals, or other contaminants.
Is there a 1988 copper nickel?
No US nickels have ever been struck in copper. The alloy they're made from contains copper but it's not enough to give the coins a copper color. Your coin was probably discolored due to dirt, exposure to heat or chemicals, or some other contaminant.
Why is a gold coin shiny?
it is coated in copper. copper prevent corrosion.
Can copper prevent osteoporosis?
Copper may play a role in preventing osteoporosis.
Ways to prevent getting wet in the forest?
how to prevent getting wet in the forest how to prevent getting wet in the forest how to prevent getting wet in the forest
Is there a copper looking 1955 nickel?
No. All 1955 nickels are made from the standard alloy of 25% nickel and 75% copper, and have the same color as other nickels. Your coin may be discolored due to exposure to chemicals or heat.
Does the head of your penis getting discolored a problem?
If this is a change in the appearance, see a doctor about it. It would be a shame to have to cut it off.
How do you prevent pinholes in copper pipes?
By controlling the velocity
How does anhydrous copper chloride prevent rust?
it doesn't
