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explain why cp is always greater than cv????

_{}2 NO(g) + Br_{2}(g) . If P_{Br2}_{}= P/9 at equilibrium and P is total pressure, the ratio of Kp/P is equal to(The ones marked in blue, those steps I couldn't understand , please explain it )why oxygen is paramagnetic in nature by molecular orbital theory

calculate the molar solubility of fe(OH)2 at a ph 8 ksp of fe(oh)2=1.6X1o 2 d power -14

what is physical equilibrium? Give two example

Equal volumes of two solutions pH=2 and pH=4 are mixed together.Calculate the pH of the resulting solution?

NO3- , NO2- NO2. and NO2+

plz answer me soon and explain

a) one unit change of PH

b) two """"""""""""""""

c) no change in Ph

d) the Phto equal PKa+-1

the value of Kc = 4.24 at 800K for the reaction

CO(g) + H2O(g) CO2(g) + H2(g)

Calculate the equilibrium concentration of CO2 ,H2O ,CO , H2 at 800K ,if only CO and H2O are pesent initially at concentration of 0.10M each.

100 ml of 0.1 N NaOH is mixed with 100 ml of 0.1 N H

_{2}SO_{4}.The pH of the resultant solution is??An ammonia-ammonium chloride buffer, pH = 9. Concentration of ammonia = 0.25M. By how much the pH will change if 75ml 0.1M KOH be added to 200ml buffer solution. Kb = 2 x 10

^{-5}In a closed system:A

_{(s)}⇌2B_{(g)+}3C_{(g)}if the partial pressure of C is doubled then partial pressure of B will be??1)-57.1

2)-2*57.1

3)-3*57.1

Calculate the degree of ionization of 0.01M solution of HCN.Ka = 4.8 X 10-10.Also calculate H

^{+ }ion concentration of the solution^{}^{}what is the conjugate base of CN

^{- }What is the pH of 10

^{-8}M HCl solution?At 90'C, pure water has [H30

^{+}]=10^{-6}mole/liter. the value of k_{W}at 90'C is:^{-6}^{-8}^{-12}^{-14}why are standard solutions always prepared in volumetric flask?

_{5}is 50% dissociated at an equilibrium pressure of 4 atm. At what pressure it would dissociate to the extent of 80% at the same temperature:-a) 0.05 atm

b) 0.60 atm

c) 0.75 atm

d) 2.50 atm

Kindly answer sir/mam.

Question -The pH of 0.1 M monobasic acid is 4.50. Calculate the concentration of H+, A- and HA. Also determine the values of ka and pka of mono basic acid.in qualitative analysis NH

_{4}Cl is added befor adding NH_{4}OH for testing Fe^{3+}or Al^{3+}ions?_{4}(g) is attained by mixing equal moles of A and B in a one litre vessel. Then at equilibrium:- (Kindly explain the answer also)a) [A] = [B]

b) [A] > [B]

c) [A] < [B]

d) [AB

_{4}] > [A]Kindly answer sir/mam.

The pH of a solution obtained by mixing 100 ml of 0.2 M CH

_{3}COOH with 100 ml of 0.2 M NaOH will be??(given pK_{a}for CH_{3}COOH =4.74 and log 2=0.301)_{2}S, H_{2}SO_{4}, and HNO_{3}what is the formula and basicity of hydrated oxalic acid and anhydrous oxalic acid?

_{p}) are related as ${\mathrm{K}}_{\mathrm{p}}=\frac{4{\mathrm{\alpha}}^{2}\mathrm{P}}{\left(1-{\mathrm{\alpha}}^{2}\right)}$?(1) ${\mathrm{N}}_{2}{\mathrm{O}}_{4}\left(\mathrm{g}\right)\rightleftharpoons 2{\mathrm{NO}}_{2}\left(\mathrm{g}\right)$

(2) ${\mathrm{H}}_{2}\left(\mathrm{g}\right)+{\mathrm{I}}_{2}\left(\mathrm{g}\right)\rightleftharpoons 2\mathrm{HI}\left(\mathrm{g}\right)$

(3) ${\mathrm{N}}_{2}\left(\mathrm{g}\right)+3{\mathrm{H}}_{2}\left(\mathrm{g}\right)\rightleftharpoons 2{\mathrm{NH}}_{3}\left(\mathrm{g}\right)$

(4) ${\mathrm{PCl}}_{3}\left(\mathrm{g}\right)+{\mathrm{Cl}}_{2}\left(\mathrm{g}\right)\rightleftharpoons {\mathrm{PCl}}_{5}\left(\mathrm{g}\right)$

K

_{sp}of Mg(OH)_{2 }is 4.0×10^{-12}.The number of moles of Mg^{2+}ions in one litre of its saturated solution in 0.1 M NaOH is??2SO2 + O2 ------> 2SO3

has a value of 278 at a particular temperature. What is the value of the equilibrium constant for the reaction at the same temperature

SO3 -----> SO2+ ½O2

Q] One mole of N

_{2}O_{4}(g) at 300K is kept in a closed container under one atmosphere. It is heated to 600K when 20% by mass of N_{2}O_{4}(g) decomposes to NO_{2}(g). The resultant pressure is??How CH3COONa is a strong electrolyte?

If the value of Kc is 3, the percentage by mass of iso-butanein the equilibriummixture would be:-

a) 75%

b) 90%

c) 30%

d) 60%

Kindly answer sir/mam.

what is radioactive or non radioactive sugar??

calculate the enthalpy change for the reaction :-

H2(g) + Cl2(g) → 2HCL(g)

given that the bond energies H-H,Cl-Cl,and H-Cl bonds are 433, 244 and 431kj/ mol respectively.

under what conditions kp =kc for a gaseous reaction

using the following combustion data-:

C2H4(g) +3O2(g) ->2CO2(g) +2H2O(l) ;ΔH

^{0}^{}=-140KJ/MOLC2H6(g) +7/2O2(g)->2CO2(g) + 3H2O(l) ;ΔH

^{0}=-1550KJ/MOLH2(g) + 1/2O2(g) -> H2O(l);ΔH

^{0}=-286.0KJ/MOLcalculate simultaneous solubility of AgCNS and AgBr in a solution of water.Ksp AgCNS=1.2*10

^{-12},Ksp AgBr=5*10^{-13}49) Which oxychloride has maximum pH?

a) NaClO b) NaClO

_{2}c) NaClO_{3}d) NaClO_{4}88) A infinite dilution the percentage ionisation for both the strong and weak electrolyes is:

a) 1% b)20% c)50% d) 100%

what type of substance is used for preparing standard solution?

the value of delta G for the phosphorylation of glucose in glycolysis is 13.8 kj/mol. Find the value of Kc at 298K?

The solubility product constant of Ag

_{2}CrO_{4}and AgBr are 1.1 × 10^{–12}and 5.0 × 10^{–13}respectively. Calculate the ratio of the molarities of their saturated solutions.Is SnCl_{4}a Lewis acid or a base???Arrange the following Bronsted Acids in increasing acidic strength,Give Reason for your choice :1)HCl,HBr ,HI,CH_{3}COOH,HCO_{3},H_{2}O2)HCOOH,C_{6}H_{5}COOH,CH_{3}COOHH2(g)+I2(g)2HI(g)

at 720K is 48. What is the value of the equilibrium constant for the reaction

1/2H2(g)+1/2I2(g)HI(g)

At temperature T, a compound AB

_{2}(g) diassociates according to the reaction :2AB

_{2}(g) [reverisble sign ] 2AB(g) + B_{2}.with degree of dissociation, x, which is small compared to unity. Deduce the expression for x in terms of equillibrium constant K

_{p}and the total pressure.The equilibrium constants K

_{P1}and K_{P2}for the reactions X↔2Y and Z↔P +Q, respectively are in the ratio of 1 : 9. If the degree of dissociation of X and Z be equal then the ratio of total pressure at these equilibria iswhat is meant by "weighing by transfer"?when is this used?

increase

decrease

unchanged

none

What is an evacuated vessel? [From Comprehensive Chemistry Pg.-370]

degree of hydrolysis of N BY 100 solution of KCN is (given ka = 1.4 multiplied by 10 power -9)

_{1}and K_{2}?A2 +B2 double headed arrow 2AB(K1)

and 1/3A2+1/3B2 Double headed arrow 2/3AB(K2)

When 0.1 mole of ammonia is dissolved in sufficient water to make 1 litre of solution.The solution is found to have a hydroxide ion concentration of 1.34×10

^{-3}.The dissociaton constant of ammonia is??Ksp(BaSO4)= 1.5*10-9. find solubility in a)pure water b)0.1 M BaCl2 solution

rn

Why do we take equimolar quantities of reacting compounds in the preparation of double salts?

rnreached, concentration of C was thrice the equilibrium concentration of B. Calculate KC.

1)- What is the pH of10

^{-8}(N) HCl?What is meant by "weighing by transfer"?when is this used?answer with respect to basic laboratory techniques.

CO (g) + 1/2 O2 equlibrium equal is Co2 (g) is

an excess of agno3 is added to 100 ml of a 0.01 M solution of [cr(h2o)4cl2]cl.the number of agcl precipated would be:

is this question based on common ion effect

1 H2O , H2S ,H2Se , H2Te

2 SiH4 , PH3, H2S, HCL

the equilibrium constant kp= 2.9*10^ -5 atm^3. the total pressure of gases at equilibrium when 1.0 mole of reactant was heated will be

H

^{+}, H_{2}O, NH_{3}, BF_{3}, Al^{3+}, BeCl_{2}, Cl^{-}_{2}(g) + 3H_{2}(g)_{}2NH_{3}at constant volume, then equilibrium will:-a) Shift in forward direction

b) Shift in reverse direction

c) Not shift in any direction

d) All are correct

Kindly answer sir/mam.

plz explain me ostwald dilution law

calculate the pH of 1.0 X 10^ -8 M solution of HCL ?