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Why might magnesium metal rather than copper metal be used to study the effect of concentration of hydrochloric acid on rates of reactions?
Magnesium metal reacts more vigorously with hydrochloric acid than copper metal, resulting in a more noticeable change in reaction rate. This makes it easier to observe the effect of concentration on reaction rates. Additionally, magnesium is less expensive and more readily available than copper.
How could you show that magnesium reacts with acid faster with acid than with pure water and what would you see?
Metallic magnesium will cause rapid evolution of hydrogen gas when contacted with an acid in water solution, but will cause gas evolution much more slowly if at all when in contact with pure water.
Why does aluminium react slowly with dilute hydrochloric acid in the beginning?
Aluminum reacts slower then similar metals such as Magnesium or Zinc because of an Aluminum Oxide (Al2O3) layer. The dilute acid has to break down the Al2O3 where as in some other reactions this process is not necessary.
Does dilute Hydrochloric acid dissolve Copper?
No, because copper is below Hydrogen in the activity series list, (meaning the presence of hydrogen is not enough to replace copper) there is no reaction that takes place.
Tell why vinegar reacts much more slower with zinc and marble chips than hydrochloric acid?
Vinegar reacts more slowly with zinc and marble chips because it has a lower concentration of hydrogen ions compared to hydrochloric acid. Hydrochloric acid is a strong acid and dissociates completely in water to produce more hydrogen ions, leading to a faster reaction. Additionally, the presence of chloride ions in hydrochloric acid can also enhance the reaction rate.
Why might magnesium metal rather than copper metal be used to study the effect of concentration of hydrochloric acid on rates of reactions?
Magnesium metal reacts more vigorously with hydrochloric acid than copper metal, resulting in a more noticeable change in reaction rate. This makes it easier to observe the effect of concentration on reaction rates. Additionally, magnesium is less expensive and more readily available than copper.
What pair of reactants would produce hydrogen most slowly?
A pair of reactants that would produce hydrogen most slowly would be dilute hydrochloric acid (HCl) and zinc (Zn). This reaction occurs at a slower rate compared to using more concentrated acids or more reactive metals.
How could you show that magnesium reacts with acid faster with acid than with pure water and what would you see?
Metallic magnesium will cause rapid evolution of hydrogen gas when contacted with an acid in water solution, but will cause gas evolution much more slowly if at all when in contact with pure water.
Why does aluminium react slowly with dilute hydrochloric acid in the beginning?
Aluminum reacts slower then similar metals such as Magnesium or Zinc because of an Aluminum Oxide (Al2O3) layer. The dilute acid has to break down the Al2O3 where as in some other reactions this process is not necessary.
How magnesium and iron react with oxygen?
Magnesium reacts with oxygen to form magnesium oxide (MgO) through a vigorous exothermic reaction, producing bright white flames and releasing heat. In contrast, iron reacts with oxygen to form iron oxides, primarily rust (Fe2O3·nH2O) when exposed to moisture. While the reaction of magnesium is quite rapid and intense, iron's reaction can be slower and requires the presence of water or moisture to facilitate rusting. Both reactions illustrate the tendency of metals to oxidize when exposed to oxygen.
Why is magnesium 2.5m powder of HNO3 faster than magnessium 2.5m strip of HNO3?
The reaction rate of magnesium powder in 2.5 M HNO3 is faster than that of magnesium strips due to the increased surface area of the powder. Finer particles expose more surface area to the acid, allowing for more collisions between reactants and facilitating a quicker reaction. In contrast, the larger surface area of the magnesium strip limits the number of reactive sites available for the acid to interact with, resulting in a slower reaction rate.
Is more or less hydrogen produced when reacted with zinc insted of magnesium?
No, both magnesium and zinc produce the same amount of hydrogen when the same amounts react with excess of strong acid (on molecular base), though the second reaction is slower. The reaction equations can tell you more about why this is.Mg + 2H+ --> Mg2+ + H2Zn + 2H+ --> Zn2+ + H2
Does dilute Hydrochloric acid dissolve Copper?
No, because copper is below Hydrogen in the activity series list, (meaning the presence of hydrogen is not enough to replace copper) there is no reaction that takes place.
What Happens When You Remove A Catalyst?
When a catalyst is removed from a chemical reaction, the reaction will proceed at a slower rate. This is because the catalyst helps lower the activation energy required for the reaction to occur. Without the catalyst, more energy is needed for the reaction to take place, resulting in a slower reaction process.
Why does ethanol burn differently than ethanol and water mixed?
Ethanol burns differently than a mix of ethanol and water because water has a higher boiling point compared to ethanol. Water will absorb heat during combustion, which can lower the overall temperature and affect the efficiency of the burning process. This can lead to a slower and less complete combustion compared to pure ethanol.
What effect do concentration changes have on the reaction time?
Concentration has a massive impact on reaction times. If you are tired (lack of concentration), your brain will be working slower, and therefore your reaction will be slower. If you are energized and focused, your brain will be better prepared for anything that challenges it.
What makes a reaction is made slower?
It's called an inhibitor
