Name the most power full reducing agent & give reason for it .

1 Answer

Answer :

The alkali metals are strong reducing agents, lithium being the most and sodium the least powerful reducing agent. Note--- With the small size of its ion, lithium has the highest hydration enthalpy which accounts for its high negative E0 value and its high reducing power. 

Related questions

Description : Which of the following is the primary reason for adding calcium carbonate to the reduction process of iron oxide ores ? The calcium carbonate: w) acts as an oxidizing agent x) removes silicate waste products y) acts as a reducing agent z) removes sulfur waste products

Last Answer : ANSWER: X -- REMOVES SILICATE WASTE PRODUCTS

Description : Assertion :- `Cr^(+2)` is a reducing agent and `Mn^(+3)` is oxidising agent. Reason :- `Mn^(+3)` has `d^(5)` configuration.

Last Answer : Assertion :- `Cr^(+2)` is a reducing agent and `Mn^(+3)` is oxidising agent. Reason :- `Mn ... is False. D. If both Assertion & Reason are False.

Description : Assertion :- A reducing agent is a substance which accepts electron. Reason :- A substanc which helps in oxidaton is known as reducing agent.

Last Answer : Assertion :- A reducing agent is a substance which accepts electron. Reason :- A substanc which helps ... . D. If both Assertion & Reason are False.

Description : Assertion :- Nitrous acid `(HNO_(2))` may act as an oxidising agent as well as a reducing agent. Reason :- The oxidation number of Nitrogen remains sa

Last Answer : Assertion :- Nitrous acid `(HNO_(2))` may act as an oxidising agent as well as a reducing agent. ... False. D. If both Assertion & Reason are False.

Description : Assertion: Reaction of `SO_(2)` and `H_(2)S` in the presence of `Fe_(2)O_(3)` catalyst gives elemental sulphur. Reason: `SO_(2)` is a reducing agent.

Last Answer : Assertion: Reaction of `SO_(2)` and `H_(2)S` in the presence of `Fe_(2)O_(3)` catalyst gives ... is False. D. If both Assertion & Reason are False.

Description : Assertion: `SO_(3)` acts as an oxidising agent as well as a reducing agent Reason: `SO_(2)` acts as an oxidising as well as a reducing agent

Last Answer : Assertion: `SO_(3)` acts as an oxidising agent as well as a reducing agent Reason: `SO_(2)` acts as an oxidising as well as a reducing agent

Description : Alkaline metals when dissolved in ammonium (NH3) act as better conductor and better reducing agent what is the reason behind it ?

Last Answer : Due to formation of solvated or Ammoniated electrons

Description : Which of the following statements about the given reaction are correct? 3Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2 (g) (a) Iron metal is getting oxidized. (b) Water is getting reduced. (c) Water is acting as reducing agent. (d)Water is acting as ... (B) & (C) B) (C) & (D) C) (A), (B) & (D) D) (B) & (D)

Last Answer : C) (A), (B) & (D)

Description : Name the reducing agent in the following reaction: 3MnO2 + 4Al———— > 3Mn + 2Al2O3 State which is more reactive, Mn or A1 and why? -Chemistry

Last Answer : ‘Al’ is reducing agent. ‘AT is more reactive than Mn v ‘Al’ displaces Mn from its oxide.

Description : Potassium Permanganate is used for purifying drinking water, because ________. (1) It is a reducing agent (2) It is an oxidising agent (3) It is a sterilising agent (4) It dissolves the impurities of water

Last Answer : (2) It is an oxidising agent Explanation: Potassium permanganate is a point-of-entry water treatment method that oxidizes dissolved iron, mancianese, and hydrogen sulfide into solid particles that are filtered ... to control iron bacteria growth in wells. It is an oxidant, but a poor disinfectant.

Description : Ferrous sulphate is used in water treatment as a/an - (1) Oxidizing agent (2) Reducing agent (3) Coagulant aid (4) Adsorbent

Last Answer : (3) Coagulant aid

Description : Carbon dioxide is – (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Last Answer : (1) a reducing agent Explanation: A good reducing agent must be able to donate electrons readily. This means that it must not have very much attraction for electrons. Carbon dioxide is just like any other oxide and can be reduced to its respective elements by applied energy.

Description : Potassium Permanganate is used for purifying drinking water, because - (1) it dissolves the impurities of water (2) It is a sterilizing agent (3) It is an oxidising agent (4) It is a reducing agent

Last Answer : (3) It is an oxidising agent Explanation: Potassium permanganate is a point-of-entry treatment method that oxidizes dissolved iron, manganese, and hydrogen sulfide into solid particles that are filtered out of the water.

Description : Carbon dioxide has each of the following uses except: w) refrigerant x) manufacture of baking soda y) fire extinguisher z) valuable reducing agent

Last Answer : ANSWER: Z -- VALUABLE REDUCING AGENT

Description : Under similar conditions, which of the following i is the best reducing agent under similar conditions? w) fluoride ion x) chloride ion y) bromide ion z) iodide ion

Last Answer : ANSWER: Z -- IODIDE ION 

Description : What metal is used as a reducing agent to obtain iron from iron oxide in the Thermite process?

Last Answer : ANSWER: ALUMINUM 

Description : Potassium Permanganate is used for purifying drinking water, because_________ (1) It is a reducing agent (2) It is an oxidising agent (3) It is a sterilising agent (4) It dissolves the impurities of water 

Last Answer :  It is an oxidising agent

Description : Ferrous sulphate is used in water treatment as a/an (1) Oxidizing agent (2) Reducing agent (3) Coagulant aid (4) Adsorbent

Last Answer : Coagulant aid

Description : Carbon dioxide is (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Last Answer :  a reducing agent

Description : Statement-1: Carbon is not used as a reducing agent for the extraction of group 2 metals. Statement-2: Carbon reacts with group 2 metal to give carbid

Last Answer : Statement-1: Carbon is not used as a reducing agent for the extraction of group 2 metals. Statement ... Statement-1 is false but Statement -2 is true

Description : Give reasons : A. Ga^(3+) salts are better reducing agent while Tl^(3+) salts are better oxidising agent.

Last Answer : Give reasons : A. Ga3+ salts are better reducing agent while Tl3+ salts are better oxidising agent. B. PbCl4 is less stable than PbCl2

Description : Reducing agent involved in fermentation? -Biology

Last Answer : answer:

Description : Reducing agent for `CO_(2)` fixation in bacterial photosynthesis is

Last Answer : Reducing agent for `CO_(2)` fixation in bacterial photosynthesis is A. `NADH_(2)` B. `NADPH_(2)` C. `FMNH_(2)` D. All of these

Description : Assertion :- Bromide ion is serving as a reducing agent in the reaction `2MnO_(4)^(-)(aq.)+Br^(-)(aq.)+H_(2)Orarr2MnO_(2)(aq.)+BrO_(3)^(-)(aq.)+2OH^(-

Last Answer : Assertion :- Bromide ion is serving as a reducing agent in the reaction `2MnO_(4)^(-)(aq.)+Br^( ... is False. D. If both Assertion & Reason are False.

Description : STATEMENT-1 : `H_(2)SO_(4)` can not act as reducing agent. STATEMENT-2 : Sulphur can not increase its oxidation number beyond `+6`.

Last Answer : STATEMENT-1 : `H_(2)SO_(4)` can not act as reducing agent. STATEMENT-2 : Sulphur can not increase ... False. D. If both Assertion & Reason are False.

Description : Assertion :- In the reaction `Zn(s)+cu^(+2)(aq)rarrZn^(+2)(aq)+Cu(s)` `Cu^(+2)` ions act as oxidising agent and Zn atoms act as a reducing agent. Reas

Last Answer : Assertion :- In the reaction `Zn(s)+cu^(+2)(aq)rarrZn^(+2)(aq)+Cu(s)` `Cu^(+2)` ions ... the Reason is False. D. If both Assertion & Reason are False.

Description : A sulphur containing species that can not be a reducing agent is :-

Last Answer : A sulphur containing species that can not be a reducing agent is :- A. `SO_(2)` B. `SO_(3)^(-2)` C. `H_(2)SO_(4)` D. `S_(2)O_(3)^(2-)`

Description : In which of the following reaction `H_(2)O_(2)` acts as reducing agent :-

Last Answer : In which of the following reaction `H_(2)O_(2)` acts as reducing agent :- A. `2FeCl_(2)+2HCl+H_(2)O_(2)rarr ... 3)+H_(2)O_(2)rarr H_(2)SO_(4)+H_(2)O`

Description : The compound that can work both as an oxidising as well as reducing agent is :

Last Answer : The compound that can work both as an oxidising as well as reducing agent is : A. `KMnO_(4)` B. `H_(2)O_(2)` C ... (SO_(4))_(3)` D. `K_(2)Cr_(2)O_(7)`

Description : A reducing agent is a substance Which can:

Last Answer : A reducing agent is a substance Which can: A. Accept agent is a substance which can : B. Accept electrons C. Donate electrons D. Donate protons

Description : The compound which can act as an oxidizing agent as well as reducing agent is

Last Answer : The compound which can act as an oxidizing agent as well as reducing agent is A. `HNO_(2)` B. Hl C. HCN D. HCOOH

Description : Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In which of the following cases

Last Answer : Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In ... C. `SO_(3)^(2-)` D. `KI`

Description : Which of the following phosphorus halide is the best reducing agent?

Last Answer : Which of the following phosphorus halide is the best reducing agent? A. `PCl_(3)` B. `PF_(3)` C. `PBr_(3)` D. `PI_(3)`

Description : The compound which can act as an oxidizing agent as well as reducing agent is

Last Answer : The compound which can act as an oxidizing agent as well as reducing agent is A. `HNO_(2)` B. Hl C. HCN D. HCOOH

Description : Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In which of the following cases

Last Answer : Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In ... C. `SO_(3)^(2-)` D. `KI`

Description : Which of the following phosphorus halide is the best reducing agent?

Last Answer : Which of the following phosphorus halide is the best reducing agent? A. `PCl_(3)` B. `PF_(3)` C. `PBr_(3)` D. `PI_(3)`

Description : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will be

Last Answer : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will ... B. 1.6 g C. 3.2 g D. 0.8 g

Description : Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In which of the following cases

Last Answer : Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In ... ` C. `SO_(3)^(2-)` D. Kl

Description : In the following reaction, `SO_(4)` acts as a reducing agent: `SO_(2)+Cl_(2)+2H_(2)O to H_(2)SO_(4)+3HCl` Find the equivalent weight of `SO_(2)`.

Last Answer : In the following reaction, `SO_(4)` acts as a reducing agent: `SO_(2)+Cl_(2)+2H_(2)O to H_(2)SO_(4)+3HCl` Find the equivalent weight of `SO_(2)`.

Description : Statement -1:Aluminothermy is used for extraction of chromium from chromium oxide. Statement-2: Aluminium is reducing agent.

Last Answer : Statement -1:Aluminothermy is used for extraction of chromium from chromium oxide. Statement-2: Aluminium is ... -1 is false but Statement -2 is true

Description : Name the reducing agent that is used in the thermite process?

Last Answer : Name the reducing agent that is used in the thermite process? A. C B. Zn C. Na D. Al

Description : In the extraction of iron in the blast furnace, the reducing agent for the ore is

Last Answer : In the extraction of iron in the blast furnace, the reducing agent for the ore is A. Carbon monoxide B. Carbon dioxide C. Carbon D. Silica

Description : From the graph, which is the best reducing agent to reduce `Cu_(2)O` at high temperature

Last Answer : From the graph, which is the best reducing agent to reduce `Cu_(2)O` at high temperature A. Coke B. CO C. `CO_(2)` D. 1&2

Description : Consider the following statements in the extraction of iron from haematite: (I) `CO`is the main reducing agent (II) `Fe_(2)O_(3)`is used to oxidise th

Last Answer : Consider the following statements in the extraction of iron from haematite: (I) `CO`is the main reducing agent (II) ... I, II and III D. I, II and IV

Description : The weakest reducing agent among the following is

Last Answer : The weakest reducing agent among the following is A. Hydrogen gas B. Coke C. Carbon monoxide gas D. Aluminium metal

Description : `SO_(2)` is a strong reducing agent however it also act as an oxidising agent Which of the following reactions shows its oxidising nature ?

Last Answer : `SO_(2)` is a strong reducing agent however it also act as an oxidising agent Which ... colloidal sulphur D. Turning acidified dichromate paper green

Description : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as reducing agent Properties of element Y: (i) It is an o

Last Answer : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is ... in its maximum oxidation state is neutral in aq. Medium

Description : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as reducing agent Properties of element Y: (i) It is an o

Last Answer : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as ... oxidation number of Y in this compound is `+4`

Description : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as reducing agent Properties of element Y: (i) It is an o

Last Answer : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as reducing agent ... 3` and `+5` D. `-2` and `+4`

Description : How many of the following species can act as both bleaching agent and reducing agent `O_(3),H_(2)O_(2),SO_(2),HCl,SO_(3)`

Last Answer : How many of the following species can act as both bleaching agent and reducing agent `O_(3),H_(2)O_(2),SO_(2),HCl,SO_(3)`