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Why is it not advisable to use a ground glass stopper for a reagent bottle containing sodium hydroxide solution?
Wiki User
∙ 11y ago
Over time, the sodium hydroxide will react with the smidges of carbon dioxide in air to produce sodium carbonate, the white, crusty powder that you find around the rim of plastic capped stock bottles (for example). This powder will either prevent the ground glass stopper from sealing properly and exposing the contents to more air, or will in fact cement the ground glass stopper in the bottle, and make it impossible to remove.
Wiki User
∙ 11y ago
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What is a reagent to show that an oxide is amphoteric?
two of the reagents are aluminum hydroxide and zinc hydroxide.
What is the test reagent for chloride ion?
The most common one is a solution of silver nitrate, which forms a white precipitate of silver chloride when added to a solution containing more than a minute concentration of chloride ions.
What is the limiting reagent when sodium hydroxide and copper chloride react?
2 Na OH + CuCl2
What is a positive test for magnesium ions?
Add Sodium Hydroxide solution drop by drop and then in excess to the compound. If Magnesium ions are present, a white precipitate will form which is insoluble in excess reagent.
How does one determine which reagent is a limiting reagent?
To determine the limiting reagent, you must first determine moles of each reactant, and then look at the mole ratios among the reactants to see which one is in the least supply. That one will be the limiting reagent.
Why is sodium hydroxide or ammonia a suitable reagent for cation testing?
Sodium hydroxide solution often produces a precipitate when mixed with a solution containing a metal cation. The colour of this solid is indicative of which cation you have, for instance copper hydroxide is light blue and iron(II) hydroxide is green. Ammonium hydroxide can also produce these precipitates, but the reactions are sometimes more complex.
What chemical formula for Fehlings reagent?
The Fehling A solution contain copper sulfate.The Fehling B solution contain sodium potassium tartrate and sodium hydroxide.
What is the Baeyer s reagent?
Baaeyer reagent is used to identify double or triple bonds in organic compounds. The reagent is a cold solution of 1 % potassium permanganate in water containing also 10 % sodium carbonate.
What is the limiting reagent when 0.343 g of magnesium chloride is reacted with 10.0 mL of 2.00 M sodium hydroxide?
The limiting reagent is sodium hydroxide.
What substance is used as a control in a Biuret test?
Biuret reagent is made up of sodium hydroxide and copper sulphate.
What is a reagent to show that an oxide is amphoteric?
two of the reagents are aluminum hydroxide and zinc hydroxide.
If 638.44 g CuSO4 reacts with 240.0 g NaOH which is the limiting reagent?
Sodium hydroxide is the limiting reagent.
When measuring reagent containing sodium carbonate what should we use?
For weighing of solid Na2CO3 use an analytical balance; if it is in solution use a graduated cylinder.
What reagent is used to test for unsaturated hydrocarbons?
This reagent is bromine in solution.
What reagent is used to detect protein in a solution?
biuret reagent
What is the reagent used to test proteins?
Buiret Reagent
What is the reaction product of Fentons reagent with silver?
The reaction product of Fenton's reagent (a solution of hydrogen peroxide and ferrous iron) with silver is typically silver oxide (AgO) or silver hydroxide (AgOH) depending on the conditions of the reaction. These products are formed when the silver ions present in the solution react with the hydroxyl radicals generated by Fenton's reagent.
