0
97.4 g/mol * 0.723
70.4g ZnO2
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What is zink oxide?
zink is a d block element. ZnO2 is white in colour.
What is the formula of zinc oxide?
The formula is ZnO. Zn has an ion charge of 2+ and 0 has an ion charge of 2-. Therefore it cancels each other out only leaving Zn0.
Chemical formula zn2 and o2?
The chemical formula of the combination of Zn and O is called zinc oxide and has the chemical formula ZnO. Zn2O2 is not a compound.
What is the Word equation and skeleton equation and balanced equation for zinc oxide and carbon yields zinc vapor and carbon monoxide?
Zinc Oxide(aqeous) + Carbon(solid) -> Zinc(g) + Carbon Monoxide(g) ZnO + C -> Zn + CO - this is also balanced equation.
Why zink oxide is called amphoteric oxide?
An amphoteric metal oxide is the oxide of a metal that can form either simple metal cations or oxyanions, depending on reaction conditions. If zinc oxide is reacted with a stong acid, a simple zinc salt including the anion of the reacting acid will form. In contrast, if zinc oxide is reacted with a strong alkali, a zincate salt containing the anion ZnO2-2 along with the cation of the strong alkali will result.
What is the valency of ZnO2 in Na2ZnO2?
2
What is the chemical formula for zinc dioxide?
Formula: ZnO2
Is zinc oxide Zn20?
Zinc oxides are ZnO and ZnO2.
What is zink oxide?
zink is a d block element. ZnO2 is white in colour.
What is the formula of zinc oxide?
The formula is ZnO. Zn has an ion charge of 2+ and 0 has an ion charge of 2-. Therefore it cancels each other out only leaving Zn0.
Chemical formula zn2 and o2?
The chemical formula of the combination of Zn and O is called zinc oxide and has the chemical formula ZnO. Zn2O2 is not a compound.
What is the status of micronutrients in Pakistani soil?
Micronutrients are actually abundant in our soils except those which are alkaline and calcareous.The total use of micronutrients in our country is 2-3%.From this you can assess hoe rich our soils are in these nutrients.Alkaline soils restrict the solubility and thus the availability of nutrients to the plants as the nutrients are converted to organic forms again;for instance zinc changes to Zn(OH)2 or ZnO2.
What is the Word equation and skeleton equation and balanced equation for zinc oxide and carbon yields zinc vapor and carbon monoxide?
Zinc Oxide(aqeous) + Carbon(solid) -> Zinc(g) + Carbon Monoxide(g) ZnO + C -> Zn + CO - this is also balanced equation.
Why zink oxide is called amphoteric oxide?
An amphoteric metal oxide is the oxide of a metal that can form either simple metal cations or oxyanions, depending on reaction conditions. If zinc oxide is reacted with a stong acid, a simple zinc salt including the anion of the reacting acid will form. In contrast, if zinc oxide is reacted with a strong alkali, a zincate salt containing the anion ZnO2-2 along with the cation of the strong alkali will result.
What is the chemical equation for burning Zinc?
Zinc+oxygen----> zincoxide
A copper penny was added to a sodium hydroxide solution with granulated zinc in it and turned silver then turned gold after heating and i need to know what is the chemical equation of this reaction?
Metallic zinc dissolves in the alkaline solution, producing zincate ions and releasing hydrogen: Zn + 2OH– → ZnO2-- + H2 (visible as tiny bubbles on the surface of the zinc) You can get the same solution by adding zinc oxide to sodium hydroxide. (The zincate is probably hydrated with a couple of water molecules, but they only clutter up our equations, so we'll ignore them here.) Here's where it gets interesting: When copper is in contact with zinc* (bear with me for a few moments), in a conducting solution, an electrolytic cell is produced -- you have a battery. (In fact, you have Prof. Volta's original battery!) Electrons flow from the zinc* to the copper. At the surface of the copper coin, these electrons reduce the zincate: ZnO2-- + 2H2O + 2e- → Zn + 4OH– This produces the zinc plating you see on the coin. At the surface of the zinc*, the electrons that are being sent to the copper metal are generated by zinc dissolving to produce more zincate: Zn + 4OH– → ZnO2-- + 2H2O + 2e- Here's the cool thing: There is NO NET REACTION, but there is a net motion of zinc! The "zinc*" referred to above can be left-over zinc powder from the first step, or it can be zinc that's already built into the coin. Post-1981 US pennies, which are in fact mostly zinc with a thin copper cladding, work fine without an external zinc supply. It would seem that microscopic flaws in the cladding are necessary to let the zinc core contact the solution -- so perhaps "mint" condition pennies do need an external zinc source. (Science project, anyone?) The reaction seems at first glance to run against the electrochemical potentials of the metals, which perplexes many people. What makes it run, however, is the unseen dissolution of the metallic zinc*, which is particularly invisible in the case of a new US penny. (This is the same reaction that allows "sacrificial anodes" of zinc or magnesium to protect ship hulls against corrosion in salt water.) The experiment is more impressive, actually, with a true copper coin. Clean an old penny (1981 or earlier) by soaking it in hot vinegar until it's shiny, and drop it into the plating solution. Nothing will happen unless the penny is in contact with some zinc metal. Separate the penny from the zinc, and the plating will dissolve -- the penny returns to its original copper color. Touching the penny with a bit of zinc recreates the battery, and the zinc plating re-appears within seconds! Heating the zinc=plated penny, or just letting it sit around for several months, results in copper atoms dissolving into the zinc to produce brass - the "gold" coin is actually a brass-plated coin. This explanation, with more details and some great photos, can be found at http://woelen.scheikunde.net/science/chem/exps/copper+zinc/index.html -Jim Demers (9/4/2008)
What is the product when zinc is added to sodium hydroxide solution?
intially: Zn2+ + 2OH- -->Zn(OH)2 excess hydroxide: Zn(OH)2 + 2OH- --> [Zn(OH)4]2- It is true that excess hydroxide reacts further, but the reaction is as under: Zn(OH)2 +2(OH)- ----> (ZnO2) 2- +2H2O or ZnSO4 + 4NaOH ------> 2Na2ZnO2 +2H2O, the white precipitate of zinc hydroxide dissolves with excess hydroxide and forms a soluble complex called sodium zincate. The solution becomes clear. No ppt.
