Home
Class 12
CHEMISTRY
Red hot carbon will remove oxygen from t...

Red hot carbon will remove oxygen from the oxides `XO` and `Yo` but not from `ZO.Y` will remove oxygen from `XO`. Use this evidence to deduce the order of activity of the three metals `X,Y,` and `Z,` putting the most reactive first.

A

`AgtBgtM`

B

`BgtAgtM`

C

`MgtBgtA`

D

`MgtAgtB`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISRY

    RESONANCE ENGLISH|Exercise Comprehension|30 Videos

  • ELECTROCHEMISRY

    RESONANCE ENGLISH|Exercise Exercise 3|7 Videos

  • ELECTROCHEMISRY

    RESONANCE ENGLISH|Exercise Subjective Questions|14 Videos

  • ELECTRO CHEMISTRY

    RESONANCE ENGLISH|Exercise PHYSICAL CHEMITRY (ELECTROCHEMISTRY)|53 Videos

  • EQUIVALENT CONCEPT & TITRATIONS

    RESONANCE ENGLISH|Exercise Part -IV|22 Videos

Similar Questions

Explore conceptually related problems

Red hot carbon removes oxygen from the oxide XO and YO but not from ZO. Y will remove oxygen from XO. Use this evidence to deduce the order of activity of the three metals X, Y and Z putting the most active first.

A compound formed by elements X and Y has a cubic structure in which X atoms are at the corner of the cube and also at the face centers. Y atoms are present at the body centre and at the edge centre of the cube. a. Celculate (i) Z_(eff') (ii) total number of atoms in the cube, and (iii) formula of the compound. b. If all the atoms are removed from one of the body diagonals of the cube, calculate (i) Z_(eff') (ii) total number of atoms in the cube, and (iii) formula of the compound. c. If all the atoms from the diagonals of the one of the face of the cube are removed, calculate (i) Z_(eff') (ii) total number of atoms in the cube, and (iii) formula of the compound. d. If all the atoms are removed from one of the plane passing through the middle of t he cube, calculate (i) Z_(eff') (ii) total number of atoms in the cube, and (iii) formula of the compound. e. If all the atoms are removed from one of the axes passing through one of the face centres of the cube, calculate (i) Z_(eff') (ii) total number of atoms in the cube, and (iii) formula of the compound.

Oxygen differs from the other elements of the group. Compounds of oxygen with metals are more ionic in nature and hydrogen bonding is more important for oxygen compounds. Oxygen is never more than divalent beacasue when it hs formed two covalent bonds, there are no low energy orbitals which can be used for form. further bonds. However, the elements S,Se,Te and Po have empty d- orbitals which may be used for bonding, and they can form four or six bonds by unpairing electrons. The higher oxidation states become less stable on decending the group. The bond between S and O, or Se and O, are much shorter than might be expected for a single bond owing to rho pi - dpi interaction between the p- orbital of oxygen and d- orbital of S or Se. Which one of the following orders represents the correct order for the properties indicated against them?

Metals are extracted from their ores by a wide variety of techniques. The most common ores are oxides. Most metals are obtained by direct treatment of theirs ores with chemical agents, but the extraction of certain others require electrolysis. An example of the former type of process is the extraction of iron from its oxide, described by the following equation : Fe_(2) O_(3) + 3C rarr 2Fe + 3CO The relative ease of extraction of a metal from its oxide can be estimated using the Ellingham diagram, as shown in the figure. The diagram plots the free energies of formation of various oxides per mole of consumed oxygen as a function of absolute temperature. Which of the following best explains why the free energy of formation of Fe_(2)O_(3) becomes less negative as the temperature is increased.

In 1894 , Lord Rayleigh reported that the mass of chemically prepared nitrogen was different from that of nitrogen extracted from the atmosphere, as shown in Tables 1 and 2 . Latter, this difference was attributed to the presence of argon in atmospheric nitrogen. The masses of gases were mearsured by using a glass vessel with a known volume under atmospheric pressure (1.013xx10^(5)Pa) . |{:("From nitric oxide",,2.3001 g),("From nitrous oxide",,2.2990 g),("From amonium nitrite purified at a red heat",,2.2987 g),("From urea",,2.2985 g),("From ammonium nitrite purified in the cold",,2.2987 g),("Mean",,2.2990 g):}| |{:(O_(2) "was removed by hot copper" (1892),,2.3103 g),(O_(2) "was removed by hot iron" (1893),,2.3100 g),(O_(2) "was removed by ferrous hydrate (1894),2.3102 g,),(Mean,,2.3102 g):}| Ramsay and cleve discovered helium in cleveite (a mineral consiting of uranium oxide and oxides of lead, thorium, and rare earths, an impure variety of uraninite) independently and virtually simultaneously in 1895 . The gas extracted from the rock showed a unique spectroscopic line at around 588 nm (indicated by D3 in Figure 1 ), which was fist observed in the spectrum of solar prominence during a total eclipse in 1868 , near the well-known D_(1) and D_(2) lines of sodium. ul("Which") equation explains the occurrence of helium in cleveite among [A] to [D] below? Mark one.

In 1894 , Lord Rayleigh reported that the mass of chemically prepared nitrogen was different from that of nitrogen extracted from the atmosphere, as shown in Tables 1 and 2 . Latter, this difference was attributed to the presence of argon in atmospheric nitrogen. The masses of gases were mearsured by using a glass vessel with a known volume under atmospheric pressure (1.013xx10^(5)Pa) . |{:("From nitric oxide",,2.3001 g),("From nitrous oxide",,2.2990 g),("From amonium nitrite purified at a red heat",,2.2987 g),("From urea",,2.2985 g),("From ammonium nitrite purified in the cold",,2.2987 g),("Mean",,2.2990 g):}| |{:(O_(2) "was removed by hot copper" (1892),,2.3103 g),(O_(2) "was removed by hot iron" (1893),,2.3100 g),(O_(2) "was removed by ferrous hydrate (1894),2.3102 g,),(Mean,,2.3102 g):}| Ramsay and cleve discovered helium in cleveite (a mineral consiting of uranium oxide and oxides of lead, thorium, and rare earths, an impure variety of uraninite) independently and virtually simultaneously in 1895 . The gas extracted from the rock showed a unique spectroscopic line at around 588 nm (indicated by D3 in Figure 1 ), which was fist observed in the spectrum of solar prominence during a total eclipse in 1868 , near the well-known D_(1) and D_(2) lines of sodium. ul("Identify") the transition relevant to the D_(3) line of helium among the transitions [A] to [E] indicated in Figure 2. Mark one of the following: [A] [B] [C] [D] [E]

Despite the fact that aluminium is a reactive metal, it is a stable in air as well as in water. This is due to the formation of thin layer of oxide on the surface of aluminium metal which makes it passive for further attack. The layer is so useful, that in industry, it is purposely deposited by an electrolytic process called anodising. Reaction of aluminium with oxygen is highly exothermic and is called thermite reaction. 2Al_((s)) +(3)/(2) O_(2(g)) rarr Al_(2)O_(3(s)) Delta_(f) H^(Ө) = -1670 kJmol^-1 This reaction finds application for welding of metal and in the metallurgical extraction of many metals from their oxides. The limitation is that to start the reaction, high temperature is required for which an ignition mixture is required. The reaction which is not involved in thermite process is

When an atom or an ion is missing from its nomal lattice site a lattice vacanecy (Schottky defect) is created. In stoichmeteric ionic crystals, a vacancy of one ion has to be accompanied by the vacancy of the oppositely charge ion in order to maintain electrical neutrality. In a Frenkel defect an ion leaves its position in the lattice and occupies an interstitial void. This id the Frenkel defect commonly found along with the Schottky defects and interstitial. In pure alkali halides. Frenked defects are not found since the ions cannot get into the interstitial sites. Frenkel defects are found in silver halides because of the small size of the Ag^(+) ion. Unike Schottky defects, Frenkel defect do not change the density of the solids. in certain ionic solids (e.g., AgBr) both schottky and Frenkel defect occur. The Defects idiscussed above do not disturb the stoichiometery of the crystalline material. there is large variety of non-stoichiometric inorganic solids which contains an excess or deficienty of one of the elements. Such solids showing deviations from the ideal stoichiometric composition from an important group of solids. For example in the vanadium oxide, VO_(x),x can be anywehere between 0.6 and 1.3 there are solids such as difficult to prepare in the soichiometric omposition thus, the ideal composition in compounds such as FeO is difficult to obtain (normally we get a compositiion of Fe(0.95) O but it may range from Fe_(0.93) O to Fe_(0.96)O ). Non-stoichiometric behavious is most commonly found for transition metal compounds through is also known for some lathanoids and actinoids. Zinc oxide loses oxygen reversible at high temperature and turns yellow in colour. the excess metal is accomodated interstitial, giving rise to electrons trapped in the neighbourhood, the enchanced electrical conductivity of the non-stoichiometric ZnO arises from these electrons. Anion vacancies in alkali halides are produced by heating the alkali halid crystals in an atmosphere of the alkali metal vapour. when the metal atoms deposit on the surface they diffuse into the cystal and after ionisation the alkali metal ion occupies cationic vacancy whereas electron occupies anionic vacancy. Electrons trapped i anion vacancies are referred to as F-centers (From Farbe the German word for colouf) that gives rise to interesting colour in alkali halides. Thus, the excess of potassium i KCl makes the crystal appear violet and the excess of lithium in LiCl makes it pink. Which of the following is most appropritate crystal to show Fremkel defect ?

RESONANCE ENGLISH-ELECTROCHEMISRY-Objective Questions
  1. Given : E^(@) (Cu^(2+//Cu) = 0.337V and E^(@) (Sn^(2+//Sn) = -0.136V. ...

    Text Solution

    |

  2. Red hot carbon will remove oxygen from the oxides XO and Yo but not fr...

    Text Solution

    |

  3. what is the emf at 25^(@)C for the cell, Ag|{:(AgBr(s)" " Br^(-)), ...

    Text Solution

    |

  4. The standard reduction potential E^(@) of the following systems are:- ...

    Text Solution

    |

  5. Consider the reaction: (T = 298 K) Cl2 (g) + 2 Br^(-) (aq) rarr 2 Cl...

    Text Solution

    |

  6. 2Ce^(4+) + Co rightarrow 2Ce^(3+) + Co^(2+), E(cell)^(@) = 1.89V E(C...

    Text Solution

    |

  7. MnO(4)^(-) + 8H^(+) + 5e^(-) rightarrow Mn^(2+) + 4H(2)O, E^(@) = 1.51...

    Text Solution

    |

  8. A hydrogen electrode placed in a buffer solution of CH(3)COONa and CH(...

    Text Solution

    |

  9. The electrode potential of electrode M(s) rightarrow M^(n+) (aq) (2M...

    Text Solution

    |

  10. Two weak acid solutions HA(1) and HA(2) with the same concentration an...

    Text Solution

    |

  11. DeltaG is the available energy (energy produced) during the electochem...

    Text Solution

    |

  12. Electrolysis of a solution of MnSO(4) in aqueous sulphuric acid is a m...

    Text Solution

    |

  13. During thhe preparation of H(2)S(2)O(8) (per disulphuric acid) O(2) ga...

    Text Solution

    |

  14. The equivalent conductivity of KCl at infinite dilution is 130S cm^(2)...

    Text Solution

    |

  15. When the sample of Cu with Zn impurity is to be purified by electrolys...

    Text Solution

    |

  16. Calculate the pH of a buffer when the reduction potential of hydrogen ...

    Text Solution

    |

  17. A galvanic cell is composed of two hydrogen electrods, one of which i...

    Text Solution

    |

  18. A gas X at 1 atm is bubbled through a solution containing a mixture of...

    Text Solution

    |

  19. The oxidation potentials of Zn, Cu, Ag, H(2) and Ni are 0.76, -0.34, -...

    Text Solution

    |

  20. The reduction potential of a half-cell consisting of a Pt electrode im...

    Text Solution

    |