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What gas evolved when potassium nitrate crystals are heated with concentrated sulphuric acid?
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What 2 biochemical compounds support the idea things evolved from common ancestors?
Carbon and potassium
What happens when dilute sulphuric acid is poured on a copper plate-?
It depends, if the susexphuri acid is of a high concentration and is hot, then the copper plate will react and dissolve. sex though it is not a strongly oxidizing acid, hot concentrated sulfuric acid is a strong enough oxidizing agent to dissolve copper.
What gas released when acid reacts with magnesium ribbon?
In most cases, hydrogen is the gas evolved as the result of an acid and a magnesium ribbon. But in some instances when it reacts with a concentrated acids, it may produce different gases as well. As an example, the reaction between magnesium and concentrated sulfuric acid produces sulfur dioxide.
How does potassium react with water?
It only creates a purple "cloud" as was stated in the previous answer when phenolphthalein is added to the water. The "cloud" is not a cloud. Hydrogen gas is evolved. Phenolphthalein is clear in acidic conditions, and purple in basic conditions. As potassium is added to the water, potassium hydroxide is created (alkaline/basic) therefore creating the purple colour water, and hydrogen gas is evolved. A link accompanying this shows lithium through to Caesium, potassium included, in water and shows the equation of the reaction. Caesium in particular is very entertaining.
Why heat is evolved when concentrated acid is diluted with water?
as you dilute the acid the flow of h;ydronium ions is slowesd down so the electrical energy pf those ions is convert to heat as per law of conservation of energy
Which gas is evolved when potassium ferrocyanide crystals are heated with conc. sulphuric acid?
Hydrogen cyanide (HCN) is most likely the gas evolved.
What gas is evolved when a few crystals of potassium nitrate are heated in a hard glass test tube?
Nitrogen dioxide and oxygen are released.
What is the name or formula the gas evolved in heating of potassium chlorate?
Oxygen
If a piece of potassium metal is dropped in water then a vigorous reaction takes place with the formation of potassium hydroxide and hydrogen gas is evolved?
Yes, it is correct.
What 2 biochemical compounds support the idea things evolved from common ancestors?
Carbon and potassium
What happens in the coke and salt experiment?
Salt crystals are nucleation centers for carbon dioxide and this gas is violently evolved.
How was the flood created in Halo Combat Evolved?
it was from a biochemical disaster when hydrogen, potassium, and chlorine is combined and you inject it in to a slug!
What happens when dilute sulphuric acid is poured on a copper plate-?
It depends, if the susexphuri acid is of a high concentration and is hot, then the copper plate will react and dissolve. sex though it is not a strongly oxidizing acid, hot concentrated sulfuric acid is a strong enough oxidizing agent to dissolve copper.
What gas does Potassium permanganate give off when it is cracked and turned black?
Oxygen gas in evolved. 2KMnO4 ---> K2MnO4 + MnO2(s) + O2
What is the importance of center of mass?
Its evolved as a useful and time saving tool, and represents the mass if it were concentrated at a single point and especially useful when calculating motions of masses involved with the equations of motion.
What if sulfuric acid and sodium are mixed?
When Sulphuric acid and Sodium are mixed, Hydrogen gas is evolved which makes a pop sound when a burning splinter or candle is bought near it. The following reaction takes place: H2S04 + Na - NaSO4 + H2
What gas released when acid reacts with magnesium ribbon?
In most cases, hydrogen is the gas evolved as the result of an acid and a magnesium ribbon. But in some instances when it reacts with a concentrated acids, it may produce different gases as well. As an example, the reaction between magnesium and concentrated sulfuric acid produces sulfur dioxide.
