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In the formation of superoxide M+O(2)t...

In the formation of superoxide
`M+O_(2)toMO_(2),` the metal M is

A

Li

B

Na

C

K

D

Ba

Text Solution

Verified by Experts

The correct Answer is:
C
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In the reaction, M + CO_(2) to MO_(2) (superoixde) the metal M is :

In the reaction, M+O_(2)to MO_(2) (superoxide), the metal M is

Lithium only forms monoxide when heated in oxygen. Sodium forms monoxide and peroxide in excess of oxygen. Other alkali metals form superoxide metals superoxide with oxygen i.e., MO_(2) . The abnormal behaviour of lithium is due to small size. The larger size of higher metals also decides the role in formation of superoxide. All the three anions abstract proton from water. The three anions are raleted to each other as follows: underset("oxide ion")(O_(2)^(2-)overset((1)/(2)O_(2))(to)underset("peroxide ion")(O_(2)^(2-))overset(O_(2))(to)underset("superoxide ion")(2O_(2)^(-)) Q. Consider the following reaction : M+O_(2) to MO_(2) (M=alkali metal) (stable superoxide)

Following information are known abot a metal M : I. A salt of metal M is used in the manufacture of gunpowder. II. The superoxide of metal M is used as an air purifier in submarines. III. The hydroxide of metal M is used for the absorption of gases like CO_(2),SO_(2) , etc. in eudiometry. Identify the metal M :

Lithium only forms monoxide when heated in oxygen. Sodium forms monoxide and peroxide in excess of oxygen. Other alkali metals form superoxide metals superoxide with oxygen i.e., MO_(2) . The abnormal behaviour of lithium is due to small size. The larger size of higher metals also decides the role in formation of superoxide. All the three anions abstract proton from water. The three anions are raleted to each other as follows: underset("oxide ion")(O^(2-)overset((1)/(2)O_(2))(to)underset("peroxide ion")(O_(2)^(2-))overset(O_(2))(to)underset("superoxide ion")(2O_(2)^(-)) Q. In hydrolysis, the alkali metals oxides, peroxide and superoxide act as:

Lithium only forms monoxide when heated in oxygen. Sodium forms monoxide and peroxide in excess of oxygen. Other alkali metals form superoxide metals superoxide with oxygen i.e., MO_(2) . The abnormal behaviour of lithium is due to small size. The larger size of higher metals also decides the role in formation of superoxide. All the three anions abstract proton from water. The three anions are raleted to each other as follows: underset("oxide ion")(O_(2)^(2-)overset((1)/(2)O_(2))(to)underset("peroxide ion")(O_(2)^(2-))overset(O_(2))(to)underset("superoxide ion")(2O_(2)^(-)) Q. Which compounds will liberate oxygen when reacts with ice cold water?

NARAYNA-S-BLOCK ELEMENTS-Physical properties
  1. Which of the following statements reagarding alkali metals is not corr...

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  2. Which of the following is the weakes base?

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  3. In the formation of superoxide M+O(2)toMO(2), the metal M is

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  4. The mental that does not give superoxide is

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  5. The nitrated of the group I elements decompose not to the oxide but to...

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  6. The main reason for not using a mercury electrolytic cell in NaOH manu...

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  7. When chlorine is passed through concentrated NaOH solution, the compou...

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  8. In the solvy's process the reaction 2NH(4)Cl+Ca(OH)(2)toCaCl(2)+2NH(...

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  9. On heating baking soda the compounds formed are

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  10. Sodium carbonate is treated with acids to from ……gas

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  11. NaHCO(3) is used to remove…… of the stomach

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  12. When a standard solution of NaOH is left in air for a few hours:

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  13. Baking powder is a mixture of (i) NaHCO(3) , (ii) starch (iii) Ca(...

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  14. If NaOH is added to an aqueous solution of Zn^(2+) ions a white precip...

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  15. A mikxture of Al (OH)(3) and Fe(OH)(3) can be sparted easily be treati...

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  16. When sulphur is heated with NaOH (aq) the compounds formed are:

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  17. CO(2)+NH(3)+H(2)OtoX, X+NaCl toT+NH(4)Cl, 2Yoverset(Delta)rarrZ+H(...

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  18. On being placed in water, sodium peroxide not only produces an alkalin...

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  19. Bakng powder used to make cake is a mixture of starch, NaHCO(3) and Ca...

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  20. KO(2) is used in oxygen cylinders in space and submarines because it

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