Description : If, `H_(2)(g)+Cl_(2)(g)rarr 2HCl(g) , Delta H^(@)=-44` Kcal `2Na(s)+2HCl(g)rarr 2NaCl(s)+H_(2)(g), Delta H=-152` Kcal Then, `Na(s)+0.5Cl_(2)(g)rarr Na
Last Answer : If, `H_(2)(g)+Cl_(2)(g)rarr 2HCl(g) , Delta H^(@)=-44` Kcal `2Na(s)+2HCl(g)rarr 2NaCl(s)+H_(2)( ... ` A. 108 Kcal B. 196 Kcal C. `-98` Kcal D. 54 Kcal
Description : `CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)(CH)-CH_(3) underset(-H_(2)O)overset(H^(o+))rarr[F] overset(Br_(2)//C Cl_(4))rarrC_(5)H_(10)Br_(2)(G)` Ho
Last Answer : `CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)(CH)-CH_(3) underset(-H_(2)O)overset(H^(o+))rarr[F] ... (including all stereoisomers) A. 2 B. 6 C. 3 D. 5
Description : For the reaction `Ag_(2)O(s)rarr 2Ag(s)+1//2O_(2)(g)` the value of `Delta H=30.56 KJ mol^(_1)` and `Delta S = 66 JK^(-1)mol^(-1)`. The temperature at
Last Answer : For the reaction `Ag_(2)O(s)rarr 2Ag(s)+1//2O_(2)(g)` the value of `Delta H=30.56 KJ mol^(_1)` and `Delta ... :- A. 373 K B. 413 K C. 463 K D. 493 K
Description : At 473 K,`K_(c)` for the reaction `OCl_(5(g))rArrPCl_(3(g))Cl_(2(g))` is `8.3xx10^(-3)`. What will be the value of `K_(c)` for the formation of `PCl_(
Last Answer : At 473 K,`K_(c)` for the reaction `OCl_(5(g))rArrPCl_(3(g))Cl_(2(g))` is `8.3xx10^(-3)`. What will be ... 3)` B. 120.48 C. `8.3xx10^(-3)` D. 240 .8
Description : Formation of `ClF_(3)` from `Cl_(2)and F_(2)` is an exothermic process . The equilibrium system can be represented as `Cl_(2(g))+3F_(2(g))rArr2ClF_(3(
Last Answer : Formation of `ClF_(3)` from `Cl_(2)and F_(2)` is an exothermic process . The equilibrium system can ... , increase in pressure , addition of `F_(2)`
Description : Using the following thermochemical data. `C(S)+O_(2)(g)rarr CO_(2)(g), Delta H=94.0` Kcal `H_(2)(g)+1//2O_(2)(g)rarr H_(2)O(l), Delta H=-68.0` Kcal `C
Last Answer : Using the following thermochemical data. `C(S)+O_(2)(g)rarr CO_(2)(g), Delta H=94.0` Kcal `H_(2)(g)+1// ... .0` Kcal C. `-114.0` Kcal D. `+114.0` Kcal
Description : `C(s)+O_(2)(g)rarr CO_(2)(g)+94.0` K cal. `CO(g)+(1)/(2)O_(2)(g)rarr CO_(2)(g), Delta H=-67.7` K cal. From the above reactions find how much heat (Kca
Last Answer : `C(s)+O_(2)(g)rarr CO_(2)(g)+94.0` K cal. `CO(g)+(1)/(2)O_(2)(g)rarr CO_(2)(g), Delta H=-67.7` K cal. ... g)` A. `20.6` B. `26.3` C. `44.2` D. `161.6`
Description : Given that - `2C(s)+2O_(2)(g)rarr 2CO_(2)(g) Delta H = -787 KJ` `H_(2)(g)+ 1//2O_(2)(g)rarr H_(2)O(l) Delta =-286 KJ` `C_(2)H_(2)(g)+(5)/(2)O_(2)(g)ra
Last Answer : Given that - `2C(s)+2O_(2)(g)rarr 2CO_(2)(g) Delta H = -787 KJ` `H_(2)(g)+ 1//2O_(2)(g)rarr H_(2) ... 1802` KJ B. `-1802` KJ C. `-800` KJ D. `+237` KJ
Description : `Delta H` for the reaction, `I_((g))+I_((g))rarr I_(2(g))` will be :-
Last Answer : `Delta H` for the reaction, `I_((g))+I_((g))rarr I_(2(g))` will be :- A. Zero B. `-ve` C. `+ve` D. `oo`
Description : According to the following reaction `C(S)+1//2O_(2)(g)rarr CO(g), Delta H=-26.4` Kcal
Last Answer : According to the following reaction `C(S)+1//2O_(2)(g)rarr CO(g), Delta H=-26.4` Kcal ... compound C. The reaction is endothermic D. None of the above
Description : The temperature at which the reaction : `Ag_(2)O(s)rarr 2Ag(s)+1//2O_(2)(g)` is at equilibrium is …….., Given `Delta H=30.5 KJ mol^(-1)` and `Delta S
Last Answer : The temperature at which the reaction : `Ag_(2)O(s)rarr 2Ag(s)+1//2O_(2)(g)` is at equilibrium is .., ... 362.12 K` C. `262.12 K` D. `562.12 K`
Description : For `CaCO_(3)(s)rarr CaO(s)+CO_(2)(g)` at `977^(@)C, Delta H = 174` KJ/mol , then `Delta E` is :-
Last Answer : For `CaCO_(3)(s)rarr CaO(s)+CO_(2)(g)` at `977^(@)C, Delta H = 174` KJ/mol , then `Delta E` is :- A. 160 KJ B. 163.6 KJ C. 186.4 KJ D. 180 KJ
Description : The enthalpy change `(Delta H)` for the reaction `N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g)` is `-92.38 kJ` at `298 K`. What is `Delta U` at `298 K`?
Last Answer : The enthalpy change `(Delta H)` for the reaction `N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g)` is `-92.38 kJ` at ` ... -87.42 kJ` C. `-97.34 kJ` D. `-89.9 kJ`
Description : Arrange the carbanions, `(CH_(3))_(3)bar(C),bar(C)Cl_(3),(CH_(3))_(2)bar(C)H,C_(6)H_(5)bar(C)H_(2)`, in order of their decreasing stability
Last Answer : Arrange the carbanions, `(CH_(3))_(3)bar(C),bar(C)Cl_(3),(CH_(3))_(2)bar(C)H,C_(6)H_(5)bar(C)H_(2 ... (2)bar(C)HgtC_(6)H_(5)bar(C)H_(2)gtbar(C)Cl_(3)`
Description : For the reactions, (i) `H_(2)(g)+Cl_(2)(g)rarr 2HCl(g)+ xKJ` (ii) `H_(2)(g)+Cl_(2)(g)rarr 2HCl(l)+ yKJ` Which one of the following statement is correc
Last Answer : For the reactions, (i) `H_(2)(g)+Cl_(2)(g)rarr 2HCl(g)+ xKJ` (ii) `H_(2)(g)+Cl_(2)(g)rarr 2HCl(l)+ ... x gt y B. x lt y C. x = y D. More data required
Description : For the gas phase reaction `PCl_(5)rarrPCl_(3)(g)+Cl_(2)(g)` which of the following conditions are correct?
Last Answer : For the gas phase reaction `PCl_(5)rarrPCl_(3)(g)+Cl_(2)(g)` which of the following conditions are correct? A ... D. `Delta H gt 0` and `Delta S lt 0`
Description : The enthalpy and entropy change for the reaction, `Br_(2)(l)+Cl_(2)(g)rarr2BrCl(g)` are `30KJmol^(-1)` and `105JK^(-1)mol^(-1)` respectively. The temp
Last Answer : The enthalpy and entropy change for the reaction, `Br_(2)(l)+Cl_(2)(g)rarr2BrCl(g)` are `30KJmol^(-1)` and ` ... 285.7 K B. 273 K C. 450 K D. 300 K
Description : How many litres of `Cl_(2)` at STP will be liberated by the oxidation of `NaCl` with `10 g KMnO_(4)` in acidic medium: (Atomic weight: `Mn=55 and K=39
Last Answer : How many litres of `Cl_(2)` at STP will be liberated by the oxidation of `NaCl` with `10 g KMnO_(4)` in ... 3.54 B. 7.08 C. 1.77 D. None of these
Description : 1 g of complex `[Cr(H_(2)O)_(5)Cl]Cl_(2).H_(2)O` was passed through a cation exchanger to produce HCl. The acid liberated was diluted to 1 litre. What
Last Answer : 1 g of complex `[Cr(H_(2)O)_(5)Cl]Cl_(2).H_(2)O` was passed through a cation ... molarity of acid solution [Molecular weight of complex=266.5]?
Description : For a reversible process at T = 300K, the volume is increased from `V_(i)=1L` to `V_(f)=10L`. Calculate `Delta H` if the process is isothermal -
Last Answer : For a reversible process at T = 300K, the volume is increased from `V_(i)=1L` to `V_(f)=10L`. Calculate `Delta H ... kJ B. 4.98 kJ C. 0 D. `-11.47 kJ`
Description : For reversible melting of ice at `0^(@)C` and 1 atm. Pressure, the value of `Delta G` will be :-
Last Answer : For reversible melting of ice at `0^(@)C` and 1 atm. Pressure, the value of `Delta G` will be :- A. `lt ... 0` (zero) C. 0 (zero) D. `oo` (infinity)
Description : Assertion :- At constant temp `0^(@)C` and 1 atm, the change `H_(2)O(s)rarr H_(2)O(l)Delta H` and `Delta E` both are zero. Reason :- During isothermal
Last Answer : Assertion :- At constant temp `0^(@)C` and 1 atm, the change `H_(2)O(s)rarr H_(2)O(l) ... Reason is False. D. If both Assertion & Reason are false.
Description : Givecn that : `Zn+1//2O_(2)rarr ZnO+84000` cal ……………1 `Hg+1//2O_(2)rarr HgO+21700` cal …………2 The heat of reaction `(Delta H)` for, `Zn+HgO rarr ZnO+Hg
Last Answer : Givecn that : `Zn+1//2O_(2)rarr ZnO+84000` cal 1 `Hg+1//2O_(2)rarr HgO+21700` cal 2 ... cal B. 62300 cal C. `-105700` cal D. `-62300` cal
Description : From the thermochemical reactions, C(graphite)`+1//2O_(2)rarr CO , Delta H = -110.5` KJ `CO+1//2O_(2)rarr CO_(2),Delta H=-283.2` KJ the heat of reacti
Last Answer : From the thermochemical reactions, C(graphite)`+1//2O_(2)rarr CO , Delta H = -110.5` KJ `CO+1//2O_(2)rarr CO_( ... 7` KJ C. `-172.7` KJ D. `+172.7` KJ
Description : Given that standard heat enthalpy of `CH_(4), C_(2)H_(4)` and `C_(3)H_(8)` are -17.9, 12.5, -24.8 Kcal/mol. The `Delta H` for `CH_(4)+C_(2)Hrarr C_(3)
Last Answer : Given that standard heat enthalpy of `CH_(4), C_(2)H_(4)` and `C_(3)H_(8)` are -17.9, 12.5, -24.8 Kcal ... . `-30.2` Kcal C. 55.2 Kcal D. `-19.4` Kcal
Description : From the reaction P(White) `rarr` P(Red) `Delta H =-18.4KJ`, it follows that :-
Last Answer : From the reaction P(White) `rarr` P(Red) `Delta H =-18.4KJ`, it follows that :- A. Red P is ... P can be converted into red P and red P is more stable
Description : The Gibbs free energy change of a reaction at `27^(@)C` is -26 Kcal. and its entropy change is -60 Cals/K. `Delta H` for the reaction is :-
Last Answer : The Gibbs free energy change of a reaction at `27^(@)C` is -26 Kcal. and its entropy change is -60 Cals/K. ... Cals. C. 34 K. Cals. D. `-24` K. Cals.
Description : If `Delta H gt 0` and `Delta S gt 0`, the reaction proceeds spontaneously when :-
Last Answer : If `Delta H gt 0` and `Delta S gt 0`, the reaction proceeds spontaneously when :- A. `Delta H gt 0` B. ... Delta S` C. `Delta H = T Delta S` D. None
Description : Which of the following reactions is `Delta H` less than `Delta E` ?
Last Answer : Which of the following reactions is `Delta H` less than `Delta E` ? A. `C_(12)H_(22)O_(11)(s)+6O_(2)(g)rarr ... g)` D. `N_(2)(g)+O_(2)(g)rarr 2NO(g)`
Description : The difference in `Delta H` and `Delta E` for the combustion of methane at `25^(@)C` would be :-
Last Answer : The difference in `Delta H` and `Delta E` for the combustion of methane at `25^(@)C` would be :- A ... Cals C. `2xx298xx -3` Cals D. `2xx25xx -3` Cals
Description : For which change `Delta H ne Delta E` :-
Last Answer : For which change `Delta H ne Delta E` :- A. `H_(2)(g)+I_(2)(g)hArr 2HI(g)` B. `HCl(l)+NaOH(l)rarr NaCl( ... (g)` D. `N_(2)(g)+3H_(2)(g)rarr2NH_(3)(g)`
Description : Under which of the following conditions is the relation, `Delta H = Delta E + P Delta V` valid for a system :-
Last Answer : Under which of the following conditions is the relation, `Delta H = Delta E + P ... and pressure D. Constant temperature, pressure and composition
Last Answer : The difference in `Delta H` and `Delta E` for the combustion of methane at `25^(@)C` would be :- A ... cals C. `2xx298xx -3` cals D. `2xx25xx -3` cals
Description : For the reversible isothermal expansion of one mole of an ideal gas at 300 K, from a volume of `10 dm^(3)` to `20 dm^(3), Delta H` is -
Last Answer : For the reversible isothermal expansion of one mole of an ideal gas at 300 K, from a volume of `10 dm^(3)` to ` ... . `-1.73 KJ` C. `3.46 KJ` D. Zero
Description : `Ph-CH=CH-underset(O)underset(C)-H overset((i) CH_(3)CH_(2)MgBr)to overset((ii) H_(3)O^(o+))to(X) overset(Cu,Delta)to(Y)`
Last Answer : `Ph-CH=CH-underset(O)underset(C)-H overset((i) CH_(3)CH_(2)MgBr)to overset((ii) H_(3)O^(o+))to(X) ... -underset(O)underset(||)(C)-CH=CH-CH_(2)-CH_(3)`
Description : How can you determine the reaction, taking place at constant pressure delta (H) ?
Last Answer : The difference of Enthalpy’s of products and reactants H=Hp-Hr
Description : (4) Liquid Hydrogen + Liquid Oxygen Explanation: LOX and liquid hydrogen, used in the Space Shuttle orbiter, the Centaur upper stage of the Atlas V, Saturn V upper stages, the ... to withstand high combustion pressures and temperatures and they can be regeneratively cooled by the liquid propellant.
Last Answer : The BOD values of water indicate the (1) amount of organic debris (2) amount of oxygen used for biochemical oxidation (3) amount of oxygen used for biochemical reduction (4) amount of ozone used for biochemical oxidation
Description : If `Delta G^(@)gt 0` for a reaction then :
Last Answer : If `Delta G^(@)gt 0` for a reaction then : A. `K_(P) gt 1` B. `K_(P) lt 1` C. The products predominate in the equilibrium mixture D. None
Description : Calculate the entropy of `Br_(2)(g)` in the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g), Delta S^(@)=20.1 JK^(-1)` given, entropy of `H_(2)` and HBr is 13
Last Answer : Calculate the entropy of `Br_(2)(g)` in the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g), Delta S^(@)=20.1 JK^(-1 ... ` C. `24.63 JK^(-1)` D. `20 KJK^(-1)`
Description : `Delta S` for the reaction , `MgCO_(3)(s)rarr MgO(s)+CO_(2)(g)` will be :
Last Answer : `Delta S` for the reaction , `MgCO_(3)(s)rarr MgO(s)+CO_(2)(g)` will be :
Description : If G is the centroid of `Delta ABC`, then the area of `Delta BGC` is `"_______________"` times the area of quadrilateral ABCG.
Last Answer : If G is the centroid of `Delta ABC`, then the area of `Delta BGC` is `"_______________"` times the area of quadrilateral ABCG.
Description : The points noted by arrows are melting and boiling points of the metal zinc and magnasium. `Delta G^(0)` as a function of temperature for some reactio
Last Answer : The points noted by arrows are melting and boiling points of the metal zinc and magnasium. `Delta G^(0)` ... +Zn rarr Mg+ZnO` D. `ZnO+Mg rarrZn+MgO`
Last Answer : The points noted by arrows are melting and boiling points of the metal zinc and magnasium. `Delta G^(0)` as a ... gt 500^(@)C " but " lt 1000^(@)C`
Last Answer : The points noted by arrows are melting and boiling points of the metal zinc and magnasium. `Delta G^(0)` as a ... C. `500^(@)C` D. `1200^(@)C`
Description : Under the conditions is delta G for a reaction always positive?
Last Answer : when delta H is positive and delta S is negative
Description : What is the value for G at 5000 k if H-220 KJmol and S-0.05 KJ (molK)?
Last Answer : 30 kj
Description : The value of x and y which satisfy the equations : √ e) x=1,y=0 f) x=0,y=0 g) x=1,y=1 h) x=0,y=1
Last Answer : f) x=0,y=0
Description : The decomposition of `N_(2)O_(5)` in chloroform was followed by measuring the volume of `O_(2)` gas evolved : `2N_(2)O_(5)(C C_(4))to2N_(2)O_(4)(C Cl_
Last Answer : The decomposition of `N_(2)O_(5)` in chloroform was followed by measuring the volume of `O_(2)` gas evolved : ... log"(90)/(100)` D. `(100)/(10xx500)`