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When hydrogen selenide (H2Se) is passed into lead(II) nitrate (Pb(NO3)2), a yellow precipitate of lead(II) selenide (PbSe) is formed. This reaction occurs due to the low solubility of lead(II) selenide in water. The overall reaction can be represented as: Pb(NO3)2 + H2Se → PbSe (s) + 2 HNO3. The formation of the yellow precipitate indicates the successful reaction between the two compounds.
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What happen when steam is passed over hot copper?
Hydrogen gas is produced
How much hydrogen gas is produced when steam is passed over hot iron?
When steam is passed over hot iron, the reaction produces iron oxide and hydrogen gas. The amount of hydrogen gas produced depends on the reaction conditions such as temperature, pressure, and quantity of iron. From the balanced chemical equation, for every mole of iron that reacts, one mole of hydrogen gas is produced.
Why is the volume of gas collected twice of the volume of other gas when electric current is passed through water?
When an electric current is passed through water, water is split into it's two component gasses- hydrogen and oxygen. You will get about twice as much hydrogen as oxygen- since water (H2O) has twice the hydrogen as oxygen.
When electric current is passed through water which gas is produced on cathode?
When electric current is passed through water, hydrogen gas is produced at the cathode. This is because water molecules (H2O) are split into hydrogen (H2) and oxygen (O2) gases through electrolysis. The hydrogen gas is evolved at the negative electrode, which is the cathode.
What will happen to water molecule when electricity is passed through water during electrolysis?
During electrolysis of water, the water molecule will be split into its constituent elements: hydrogen and oxygen gas. This is due to the electrical current breaking the bonds between the hydrogen and oxygen atoms in the water molecule, resulting in the release of hydrogen gas at the cathode and oxygen gas at the anode.
What observation can be seen in a combustion tube when hydrogen gas is passed over heated copper II oxide?
When hydrogen gas is passed over heated copper II oxide in a combustion tube, the copper II oxide will be reduced, resulting in the formation of copper metal and water. The color change from black (copper II oxide) to brown (copper metal) can be observed in the tube, along with the release of steam.
What is the chemical equation when hydrogen is passed over hot tungsten oxide?
When Hydrogen Is Passed Over Hot Tubgsten Oxide (WO3) WO3 + 3H2 ----------------> 3H2O + W
What are the mission and discoveries on Neptune?
The space probe Voyager 2 passed close to Neptune in 1989 for purposes of observation. It also passed by its moons Nereid and Triton.
How can hydrogen be added to water?
Hydrogen can be added to water through a process called electrolysis, where an electric current is passed through water to separate it into hydrogen and oxygen gases.
What happen when electric current is passed through water'?
when electric current is passed through acidified water hydrogen gas is released at the cathode..
The clouds appeared to you to be land which disappeared as they passed along When does Olaudah Equiano make this observation?
When he reaches Barbados <----- not correct
What are the products formed when an electric current is passed into acidified water?
Hydrogen and oxygen
When steam is passed over red hot iron?
Hydrogen gas is produced.
What happen when steam is passed over hot copper?
Hydrogen gas is produced
When hydrogen gas passed over heated cupric oxide?
When hydrogen gas passed over heated cupric oxide, the hydrogen is oxidized and displaces copper from the copper oxide as metallic copper, because hydrogen is higher than copper in the electromotive series. Water vapor is also produced by the reaction.
What is a technique in which an electric current is passed through water to separate hydrogen from oxygen?
Electrolysis
When hydrogen gas is passed through heated calcium?
After this reaction calcium hydride (CaH2) is obtained.
