Description : `P_(4)(s) + 3OH^(-) (aq) + 3H_(2)O (I) rarr PH_(3) (g) + 3H_(2)PO_(2)^(-) (aq)` In the above equation, the species getting oxidized and reduced respec
Last Answer : `P_(4)(s) + 3OH^(-) (aq) + 3H_(2)O (I) rarr PH_(3) (g) + 3H_(2)PO_(2)^(-) (aq)` In the above equation ... ` C. `P_(4) and H_(2)O` D. `P_(4) and P_(4)`
Description : The value of enthalpy change `(DeltaH)` for the reaction `C_(2)H_(5)OH (l)+3O_(2) (g) rarr 2CO_(2) (g) +3H_(2)O (l)` at `27^(@)C` is `-1366.5 kJ mol^(
Last Answer : The value of enthalpy change `(DeltaH)` for the reaction `C_(2)H_(5)OH (l)+3O_(2) (g) rarr 2CO_(2) (g) + ... 1369. kJ` C. `-1364.0 kJ` D. `-1361.5 kJ`
Description : Potassium acid oxalate `K_(2)C_(2)O_(4).3H_(2)C_(2)O_(4).4H_(2)O` can be oxidized by `MnO_(4)^(-)` in acid medium. Calculate the volume of (in mL) 1 M
Last Answer : Potassium acid oxalate `K_(2)C_(2)O_(4).3H_(2)C_(2)O_(4).4H_(2)O` can be oxidized by ... reacting in acid solution with 5.08 gram of the acid oxalate.
Description : The unbalanced equation for the reaction of `P_(4)S_(3)` with nitrate in aqueous acidic medium is given below : `P_(4)S_(3)+NO_(3)^(-)rarrH_(3)PO_(4)+
Last Answer : The unbalanced equation for the reaction of `P_(4)S_(3)` with nitrate in aqueous acidic medium is given below : `P_(4) ... A. 18 B. `8//3` C. 8 D. 28
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 : The enthalpy of formation of ammonia is `-46.0 KJ mol^(-1)` . The enthalpy change for the reaction `2NH_(3)(g)rarr N_(2)(g)+3H_(2)(g)` is :
Last Answer : The enthalpy of formation of ammonia is `-46.0 KJ mol^(-1)` . The enthalpy change for the reaction `2NH_(3)(g) ... mol^(-1)` D. `-92.0 KJ mol^(-1)`
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 : In the chemical reaction `CH_(3)CH_(2)NH_(2) + CHCI_(3) + 3KOH rarr (A) + (B) + 3H_(2)O` the compound `(A) `and `(B)` are respectively
Last Answer : In the chemical reaction `CH_(3)CH_(2)NH_(2) + CHCI_(3) + 3KOH rarr (A) + (B) + 3H_(2)O` the compound ... `3KCl` D. `CH_(3)CH_(2)CONH_(2)` and `3KCl`
Description : The oxidation number of phosphorus in `PH_(4)^(+),PO_(2)^(3-),PO_(4)^(3-) and PO_(3)^(3-)` are respectively :-
Last Answer : The oxidation number of phosphorus in `PH_(4)^(+),PO_(2)^(3-),PO_(4)^(3-) and PO_(3)^(3-)` are respectively :- A. ... . `+3,-3,+5,+1` D. `-3,+1,+5,+3`
Description : `N_(2)O_(4), (HPO_(2))_(2), H_(2)CO_(3), SO_(2), SO_(3), P_(4)O_(10) H_(2)SO_(4), N_(2)O_(3), HNO_(3), H_(3)PO_(3)`. (a) Among the above compounds, co
Last Answer : `N_(2)O_(4), (HPO_(2))_(2), H_(2)CO_(3), SO_(2), SO_(3), P_(4)O_(10) H_(2)SO_(4), N_(2)O_(3 ... `d pi - p pi` bond are y. Given the answer as `x + y`
Description : In the following reaction `HC_(2)O_(4)^(-)(aq)+PO_(4)^(3-)(aq)hArrHPO_(4)^(-2)(aq)+C_(2)O_(4)^(2-)(aq)`, which are the two Bronsted bases?
Last Answer : In the following reaction `HC_(2)O_(4)^(-)(aq)+PO_(4)^(3-)(aq)hArrHPO_(4)^(-2)(aq)+C_(2)O_(4)^(2-)(aq)` ... 2-)` D. `HC_(2)O_(4)^(-)`and HPO_(4)^(2-)`
Description : Equivalent weight of chlorine molecule in the equation is : `3Cl_(2)+6NaOHrarr5NaCl+NaClO_(3)+3H_(2)O`
Last Answer : Equivalent weight of chlorine molecule in the equation is : `3Cl_(2)+6NaOHrarr5NaCl+NaClO_(3)+3H_(2)O` A. `42.6` B. `35.5` C. `59.1` D. 71
Description : `PH_(3) ("anhydrous") + HBr ("anhydrous") rarr X`. Identify X ?
Last Answer : `PH_(3) ("anhydrous") + HBr ("anhydrous") rarr X`. Identify X ? A. `H_(3)BrO_(3)` B. `PH_(4)Br` C. `Br_(2)` D. `P_(4)`
Description : Sodium reacts with water to form sodium hydroxide and hydrogen gas. The balanced equation which represents the above reaction is (a) Na(s) + 2H20(l) → 2NaOH(aq) + 2H2(g) (b) 2Na(s) + 2H2O(l) → 2NaOH(aq) +H2(g) (c) 2Na(s) + 2H20(l) → NaOH(aq) + 2H2(g) (d) 2Na(s) + H20(l) - 2NaOH(aq) + 2H2(g)
Last Answer : Answer: (b)
Description : What information do you get from the following chemical equation: Zn(s) + 2HCl (dil) → ZnCl2 (aq) + H2(g)
Last Answer : This gives zinc chloride and hydrogen. The word equation is: Zinc + Hydrochloric acid → Zinc chloride + Hydrogen Formulae for the products are ZnCl2 and H2
Description : `4M(s)+overset(Ө)(C)N(aq.)+2H_(2)O(aq.)+O_(2)(g)` `" " to 4[M(CN)_(2)]^(Ө)(aq.)+4overset(Ө)(O)H(aq.)
Last Answer : `4M(s)+overset(Ө)(C)N(aq.)+2H_(2)O(aq.)+O_(2)(g)` `" " to 4[M(CN)_(2)]^(Ө)(aq.)+4overset(Ө)(O)H(aq.) A ... 2)` D. `[Ag(CN)_(2)]^(-),[Zn(CN)_(4)]^(-2)`
Description : What Mass Of Calcium Carbonate Is Needed For Complete Reaction With The HCl In 2HCl(aq) plus CaCO 3 (s) CaCl 2 (aq) plus H 2 O(l) plus CO 2 (g)?
Last Answer : Need answer
Description : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half reactions `{:(Zn(s)rarrZn^(+2)+2e^(-),),(,"(Oxidation half rea
Last Answer : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half ... Reason is False. D. If both Assertion & Reason are False.
Description : A chiral `C_(5)H_(10)O` alcohol is reduced by catalytic hydrogenation to an achiral `C_(5)H_(12)O` alcohol. The original alcohol is oxidized by activa
Last Answer : A chiral `C_(5)H_(10)O` alcohol is reduced by catalytic hydrogenation to an achiral `C_(5)H_(12)O` alcohol ... -2-buten-1-ol D. 2-methyl-2-buten-1-ol
Description : Which of the following is an electrolytic cell A. lron * (ll) * (Fe) oxidized, aluminum (Al) reduced O B. Silver (Ag) oxidized, gold (Au) reduced C. Aluminum () oxidized (Zn) reduced LithiumD. (Li) oxidized, (Zn) reduced?
Last Answer : The answer is not c.
Description : Number of acidic oxides among the following is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `N_(2)O_(4)` (e) `N_(2)O_(5)` (f) `P_(4)O_(6)` (g) `P_(4)O_
Last Answer : Number of acidic oxides among the following is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `N_(2)O_(4)` (e ... (h) `SO_(3)` (i) `B_(2)O_(3)` (j) `CO`
Description : What is the effect of temperature and pressure on the yields of products? a. `N_(2)(s)+3H_(2)(g) hArr 2NH_(3)+x cal` b. `N_(2)(g)+O_(2)(g) hArr 2NO(g)
Last Answer : What is the effect of temperature and pressure on the yields of products? a. `N_(2)(s)+3H_(2)(g) hArr 2NH_(3) ... , II B. II, III C. I, III D. III, IV
Description : How many N atom are present in final product `overset(Sn//HCl)rarr overset(NaNO_(2)//HCl)rarr overset(H_(3)PO_(2))rarr` Final product.
Last Answer : How many N atom are present in final product `overset(Sn//HCl)rarr overset(NaNO_(2)//HCl)rarr overset(H_(3)PO_(2))rarr` Final product.
Description : `5H_(2)C_(2)O_(4)(aq)+2MnO_(4)(aq)+6H^(+)(aq) to 2Mn^(2+)(aq)+10CO_(2)(g)+8H_(2)O(l)` Oxalic acid, `H_(2)C_(2)O_(2)` , reacts with permanganate ion ac
Last Answer : `5H_(2)C_(2)O_(4)(aq)+2MnO_(4)(aq)+6H^(+)(aq) to 2Mn^(2+)(aq)+10CO_(2)(g)+8H_(2)O(l)` Oxalic acid, `H_ ... A. 13.5 mL B. 18.5 mL C. 33.8 mL D. 84.4 mL
Description : `C_(6)H_(5)Ohoverset(CH_(3)COCl)underset(NaOH(aq))(rarr)C_(6)H_(5)OCOCH_(3)` the above reaction is an example of
Last Answer : `C_(6)H_(5)Ohoverset(CH_(3)COCl)underset(NaOH(aq))(rarr)C_(6)H_(5)OCOCH_(3)` ... reaction B. Schotten-Baumann reaction C. Acetylation D. Benzoylation
Description : Assertion :- At constant pressure for the change `H_(2)O(s)rarr H_(2)O(g)` work done is nwgative. Reason :- During phase transition work done is alway
Last Answer : Assertion :- At constant pressure for the change `H_(2)O(s)rarr H_(2)O(g)` work done is ... is False. D. If both Assertion & Reason are false.
Description : Given `C(s)+O_(2)(g)rarr CO_(2)(g)+94.2` Kcal `H_(2)(g)+2O_(2)(g)rarr CO_(2)(g)+2H_(2)O(l)+210.8` Kcal The heat of formation of methane in Kcal will b
Last Answer : Given `C(s)+O_(2)(g)rarr CO_(2)(g)+94.2` Kcal `H_(2)(g)+2O_(2)(g)rarr CO_(2)(g)+2H_(2)O(l)+210.8` Kcal ... `-45.9` B. `-47.8` C. `-20.0` D. `-47.3`
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 : 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 : 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 : 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 the reaction `Ag_(2)O(s)rarr 2Ag(s)+1//2O_(2)(g)`, which one of the following is true :
Last Answer : For the reaction `Ag_(2)O(s)rarr 2Ag(s)+1//2O_(2)(g)`, which one of the following is true : A. ` ... . `Delta H lt Delta H` D. `Delta H gt Delta E`
Description : The enthalpy change for the reaction `2C("graphite")+3H_(2)(g)rarrC_(2)H_(6)(g)` is called
Last Answer : The enthalpy change for the reaction `2C("graphite")+3H_(2)(g)rarrC_(2)H_(6)(g ... combustion C. Enthalpy of hydrogenation D. Enthalpy of vaporisation
Description : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising nature of `O_(3)`. Reason: `O_(3)` whenever used as oxi
Last Answer : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising ... as oxidising agent essentially liberates `O_(2)`.
Last Answer : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising ... -I is not correct and Statement-II is correct
Description : The electronic spectrum of `[Ni(H_(2)O)_(6)]^(++)` shows as band at `8500cm^(-1)` due to d-d transiton . `[Ph_(4)As]_(2)[NiCl_(4)]` will have such a t
Last Answer : The electronic spectrum of `[Ni(H_(2)O)_(6)]^(++)` shows as band at `8500cm^(-1)` due to d-d transiton ... cm^(-1)` at A. 3778 B. 8500 C. 7250 D. 850
Description : What are the value of p,q,r, and s for the following reaction `" "pO_(3) + qHI to rI_(2) + sH_(2)O`
Last Answer : What are the value of p,q,r, and s for the following reaction `" "pO_(3) + qHI to rI_(2) + sH_(2)O` A. 1,6,3,1 B. 1,6,3,3 C. 1,6,6,3 D. 1,6,3,6
Description : What are the spectator ions in the given balanced chemical equation CaCI2(aq) plus k2CO3(aq) CaCO3 (s) plus 2 KCI (aq)?
Description : Finish balancing the following equation:__Al(s)+3Zn(NO 3 )2(aq) âž Al(NO 3)3(aq)+__Zn(s) What coefficient does Al(s) have in the balanced equation?
Last Answer : 2
Description : Which of the following observations is / are not correct about the given equation: Pb(NO 3 ) 2 (aq) + 2 KI (aq) PbI 2 (s) + 2KNO 3 (aq) (a) PbI 2 is yellow precipitate insoluble in water (b) It is precipitation reaction (c) It is single displacement reaction (d) It is very fast reaction
Last Answer : (c) It is single displacement reaction
Description : Are single-displacement reactions A.AgNO3 (aq) plus NaCl (aq) AgCl (s) plus NaNO3 (aq) B.2Fe(s) plus 6HCI (g) 2FeCl3 (s) plus 3H2 (g) C.2Al (s) plus 3CuCl2 (aq) 2AlCl3 (aq) plus 3Cu?
Description : In the reaction 2Li(s)+2H2O(l) âž 2LiOH(aq)+H2(g), which compound is in the gaseous state?
Last Answer : H2
Description : As the surface area of the Zn(s) used in the reaction Zn(s) + 2HCl(aq)--> ZnCl2(aq) + H2(g) is increased, the rate of the reaction willIncreaseDecreaseRemain the Same?
Last Answer : An increase in surface area means an increase in the rate of reaction.
Description : The absolute enthalpy of neutralization of the reaction, `MgO(s)+2HCl(aq.)+H_(2)O(l)` will be
Last Answer : The absolute enthalpy of neutralization of the reaction, `MgO(s)+2HCl(aq.)+H_(2)O(l)` will be A. `57.33" kj ... )` D. Less than `=57.33" kj mol"^(-1)`
Description : `2CO_((g))+O_(2(g))rarr 2CO_(2(g))+X` KJ In the above equation X KJ refers to :
Last Answer : `2CO_((g))+O_(2(g))rarr 2CO_(2(g))+X` KJ In the above equation X KJ refers to : ... Heat of vapourisation C. Heat of reaction D. Heat of sublimation
Description : In the redox reaction . `MnO_(4)^(-)+C^(2)O_(4)^(2-)+H^(+) rarr Mn^(2+)+CO_(2)+H_(2)O` (Unbalance equation) 20 mL of 0.1 M `KMnO_(4)` react quantitive
Last Answer : In the redox reaction . `MnO_(4)^(-)+C^(2)O_(4)^(2-)+H^(+) rarr Mn^(2+)+CO_(2)+H_(2)O` ( ... . 40 mL of 0.1 M oxalate D. 50 mL of 0.25 M oxalate
Description : In the balanced equation - `[Zn+H^(+)+NO_(3)^(-)rarr NH_(4)^(-) rarr NH_(4)^(+) +Zn^(+2)+H_(2)O]` coefficient of `NH_(4)^(+)` is :-
Last Answer : In the balanced equation - `[Zn+H^(+)+NO_(3)^(-)rarr NH_(4)^(-) rarr NH_(4)^(+) +Zn^(+2)+H_(2)O]` coefficient ... (4)^(+)` is :- A. 4 B. 3 C. 2 D. 1