Which carbonate is most stable? The stability of the alkaline earth metal carbonates increases as the basic character of their hydroxides increases down the group since Ba(OH)2 is most basic, therefore,BaCO3 is most stable.
Is MgCO3 thermally stable?
MgCO3 is thermally less stable than CaCO3.
Which metal carbonate is hardest to decompose?
Answer: It’s not zinc carbonate it is sodium/potassium carbonate. Explanation: Sodium /potassium carbonate are hard to decompose as they are carbonates of active metals which have strong bond between them.
Why is BaCO3 more stable than MgCO3?
BeCO3 is very unstable mainly because of the enhanced stability of BeO over BeCO3. Cations with high ionic potential have large power of polarisation. … Large cations like Ba2+ have low ionic potential and are unable to polarise the electrons of O atom due to which carbonates of large cations are more stable.
Which is least thermally stable?
BeCO3 is least thermally stable. The thermal stability of carbonates increases down the group i.e from Be to Ba.
Which is more stable znco3 or MgCO3?
Yes we can say that the [ZnC{O_3}] is thermally more stable than [MgC{O_3}] . This is because of the some factore : Because of the polarising action of $Zn$ with 18-electron configuration on the anion is larger than that of Mg.
Which is more thermally stable BeCO3 or MgCO3?
Answer-(4) The thermal stability of II gp carbonate increase down the group i.e; BeCO3 < MgCO3 < CaCO3 < SrCO3 < BaCO3 All the carbonates in this group undergo thermal decomposition to the metal oxide and carbon dioxide gas. … The carbonates become more thermally stable down the group.
Which metal carbonate is most stable thermally?
Which one of the alkaline earth metal carbonates is thermally the most stable? d. As the electropositive character of the metal increases or the basicity of their hydroxides increases down the group, their thermal stability increases. Thus, BaCO3 is the most stable and hence option (d) is correct.
Is calcium carbonate stable to heat?
As you go down the Group, the carbonates have to be heated more strongly before they will decompose. The carbonates become more stable to heat as you go down the Group.
…
| MgCO 3 | +117 |
|---|---|
| CaCO 3 | +178 |
| SrCO 3 | +235 |
| BaCO 3 | +267 |
Which metal carbonate on heating gives co2?
Metal carbonates decompose when heated.
…
Teaching notes.
| Carbonate | Copper carbonate |
|---|---|
| Colour before heating | Green |
| Colour after heating | Black |
| Gas evolved | Carbon dioxide |
| Ease of decomposition | Easy |
Which one is the most stable carbonate BaCO3 MgCO3 CaCO3 BeCO3?
BaCO3 is more thermally stable because polarising power of Ba2+ is less than other alkaline earth metals and thermal stability is inversely proportional to polarising power of action when compound containing polyatomic anion and here carbonate is polyatomic anion.
Is mgco3 thermally less stable than BeCO3?
Be2+ has smaller size than Mg2+ ion. Moreover, The size of CO32– ions is quite large. … As large cation stabilises larger anion and vice versa, therefore MgCO3 is more stable than BeCO3.
Why does thermal stability increase down the group?
The thermal stability increases as you go down Group 2. This is because the Group 2 ion has lower charge density, and thus distorts the carbonate ion less. The less distorted the carbonate ion is, the more stable it is, and so a higher temperature is required to decompose the carbonate. 6.
Which of the following has the lowest stability?
CH3−CH2−CH2⊕ is 1o carbocation. Hence, it is least stable.
Is ZnCO3 stable to heat?
ZnCO3 is thermally more stable than MgCO3 because A class 11 chemistry CBSE.
Is zinc carbonate stable to heat?
At an elementary level, the relative thermal stability of the carbonates of the metals cannot easily be explained in terms of simple ideas of bonding in these compounds.
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Teaching notes.
| Carbonate | Zinc carbonate |
|---|---|
| Colour before heating | White |
| Colour after heating | Yellow when hot, white when cool |
| Gas evolved | Carbon dioxide |
Which is more stable MgCO3 or srco3?
MgCO3 is most stable alkaline earth metal because it is present in first period. Due to this its nuclear charge is less as compare to other. Due to its less nuclear charge its bond length is small thus it is more stable.
Which is least thermally stable li2co3?
BeCO3 is least thermally stable.
Is Na2CO3 thermally stable?
Their results have demonstrated that the operating environment has a significant effect on the ternary salt’s thermal stability. It is found that the ternary salt can be stable up to at least 1000 °C in CO2, 700 °C in Ar and 670 °C in air.
Is BaCO3 stable to heat?
Thus, the stability of the decomposition product metal oxide decreases, as close packing is not possible. Hence, the stability of the carbonate increases. Thus, among the given carbonates, the order of thermal stability is BaCO3>CaCO3>MgCO3.
Which one is the most stable carbonate BaCO3 MgCO3 CaCO3 beco3?
BaCO3 is more thermally stable because polarising power of Ba2+ is less than other alkaline earth metals and thermal stability is inversely proportional to polarising power of action when compound containing polyatomic anion and here carbonate is polyatomic anion.
Which is more stable Ce3+ or Ce4+?
a)Ce4+ is more stable than Ce3+ in solutionb)Ce3+ is more sable than Ce4+ in solutionc)Ce4+ and Ce3+ are equally stabled)Ce4+ has xenon configurationCorrect answer is option ‘B’.
Which carbonate decomposes most easily?
This type of reaction is called thermal decomposition .
- Many metal carbonates can take part in thermal decomposition reactions. For example, copper carbonate breaks down easily when it is heated:
- copper carbonate → copper oxide + carbon dioxide.
- Copper carbonate is green and copper oxide is black.
Is na2co3 thermally stable?
Their results have demonstrated that the operating environment has a significant effect on the ternary salt’s thermal stability. It is found that the ternary salt can be stable up to at least 1000 °C in CO2, 700 °C in Ar and 670 °C in air.
Which one is the most stable carbonate * 1 point a BaCO3 B mgco3 C caco3 D beco3?
BaCO3 is more thermally stable because polarising power of Ba2+ is less than other alkaline earth metals and thermal stability is inversely proportional to polarising power of action when compound containing polyatomic anion and here carbonate is polyatomic anion.
References
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