Is H2O more stable than H2S?
H2S is less stable than H2O because. >>H2S is less stable than H2O because.
What is thermal stability of water?
Thermal stability describes the stability of a water body and its resistance to mixing. It is the amount of work needed to transform the water (e.g. a lake) to a uniform water density. The Schmidt stability “S” is commonly measured in joules per square meter, or .
What is the order of thermal stability?
Hence, thermal stability order : MgCO3.
Which is the most thermal stable?
In simple words – The thermal stability of hydrides decreases as we move down the group. Hence, the chemical compound ammonia (NH3 ) is the most thermally stable.
Why is H2S a weaker base than H2O?
According to the solution manual H20 is more basic or is a stronger Lewis base than H2S because oxygen is more electronegative than S and has a higher partial negative charge.
Why is H2O more basic than H2S?
H2S is more acidic than water because OH bonds are stronger than SH bonds. Sulfur is also larger than oxygen, so that helps stabilize the SH− anion relative to OH−.
What is the meaning of high thermal stability?
Thermal Stability means the ability of a fuel to resist the thermal stress which is experienced by the fuel when exposed to high temperatures in a fuel delivery system. Such stress can lead to formation of insoluble gums or organic particulates.
Why thermal stability increases down the group?
Detailed Solution All the alkaline earth metals form carbonates. All these carbonates decompose on heating CO3 and metal oxides. Therefore, the thermal stability of these carbonates increases down the group. In the 2nd group carbonates, thermal stability increases down the group due to increases in lattice energy.
Which of the following has lowest thermal stability?
Solution : Thermal stability of alkali metal oxy-acid salts increases with increasing metallic character so `Li_(2)CO_(3)` has lowest stability.
Which compound has more thermal stability?
Hence , NaCI is the most thermally stable.
Which of the following is thermally the most stable H2O H2S H2Se H2Te?
Answer: The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O > H2S > H2Se > H2Te > H2Po.
Why is H2S stronger than H2O?
Why is H2S a better nucleophile than H2O?
H2S is more nucleophilic because it is less solvated by the protic solvent: 0 H2O is more nucleophilic because it is less solvated by the protic solvent: H2S is more nucleophilic because it has a lower pKa value than H2O.
Which is the stronger acid H2O or H2S which is the stronger base Ho − or HS −?
Sulfur (S) has a larger atomic size than oxygen (0), so HS- is a more stable, weaker base than OH-. Sulfur (S) has a larger atomic size than oxygen (0), so H2S is a more stable, weaker base than H20. Sulfur (S) has a larger atomic size than oxygen (0), so H2S is a more stable, stronger acid than H20.
Is H2O more nucleophilic than H2S?
Does thermal stability increase or decrease down the group?
Answer : Solution : Thermal stability of hydrides decrease on moving down the group. This is due to the decrease in the bond dissociation enthalpy (H-E) of hydrides on moving down the group where E = O, S , Se, Te.
Which of the following has highest thermal stability Li2CO3?
The most thermally stable compound out of Li2CO3, MgCO3 and K2CO3 is K2CO3 .
Which of the following has the lowest thermal stability Li2CO3?
Correct option a Li2CO3Explanation:Since the alkali metals are highly electropositive their carbonates are highly stable towards heat. As the electropositivity increases down the group the stability is in order of :Cs2CO3 >Rb2CO3 > K2CO3 > Na2CO3 > Li2CO3Lithium carbonate decomposes on heating.
Why thermal stability increases down the group 1?
The thermal stability of most compounds of Group 1 elememts (hydroxides, carbonates, nitrates) increases down the group due to decrement in charge density of the cation.
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