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explain why cp is always greater than cv????
why oxygen is paramagnetic in nature by molecular orbital theory
what is physical equilibrium? Give two example
Is SnCl4 a Lewis acid or a base???
Arrange the following Bronsted Acids in increasing acidic strength,Give Reason for your choice :
Equal volumes of two solutions pH=2 and pH=4 are mixed together.Calculate the pH of the resulting solution?
What is an evacuated vessel? [From Comprehensive Chemistry Pg.-370]
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 H2SO4.The pH of the resultant solution is??
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??
The solubility of salts of weak acids increases at lower pH. Can you explain the derivation in textbook?
What is the pH of 10-8 M HCl solution?
At 90'C, pure water has [H30+]=10-6mole/liter. the value of kW at 90'C is:
why are standard solutions always prepared in volumetric flask?
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.
what type of substance is used for preparing standard solution?
The pH of a solution obtained by mixing 100 ml of 0.2 M CH3COOH with 100 ml of 0.2 M NaOH will be??(given pKa for CH3COOH =4.74 and log 2=0.301)
what is the formula and basicity of hydrated oxalic acid and anhydrous oxalic acid?
Ksp of Mg(OH)2 is 4.0×10-12.The number of moles of Mg2+ ions in one litre of its saturated solution in 0.1 M NaOH is??
Q] One mole of N2O4(g) at 300K is kept in a closed container under one atmosphere. It is heated to 600K when 20% by mass of N2O4(g) decomposes to NO2(g). The resultant pressure is??
can solid NaOH be used to prepare its standard solution?
how to find the negative antilog... e.g: antilog(-6.8)'' '' log(0.003)=? > How to find?and Log(0.3)=?
How CH3COONa is a strong electrolyte?
0.1 mol of PCl5 is vaporised in a litre vessel at 260 C. Calculate the concentration of Cl2 at equilibrium. If the equilibrium constant for the dissosciation of PCl5 is 0.0414
calculate simultaneous solubility of AgCNS and AgBr in a solution of water.Ksp AgCNS=1.2*10-12,Ksp AgBr=5*10-13
46) A sample of Na2CO3.H2O weighing 0.62g is added to 100ml of 0.1N H2SO4 solution. What will be the resulting solution
a) Acidic b) NEUTRAL c) BASIC
49) Which oxychloride has maximum pH?
a) NaClO b) NaClO2 c) NaClO3 d) NaClO4
88) A infinite dilution the percentage ionisation for both the strong and weak electrolyes is:
a) 1% b)20% c)50% d) 100%
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 Ag2CrO4 and AgBr are 1.1 × 10–12 and 5.0 × 10–13 respectively. Calculate the ratio of the molarities of their saturated solutions.
rnWhy do we take equimolar quantities of reacting compounds in the preparation of double salts?rn
Why do we take equimolar quantities of reacting compounds in the preparation of double salts?
At temperature T, a compound AB2 (g) diassociates according to the reaction :
2AB2(g) [reverisble sign ] 2AB(g) + B2.
with degree of dissociation, x, which is small compared to unity. Deduce the expression for x in terms of equillibrium constant Kp and the total pressure.
The equilibrium constants KP1 and KP2 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 is
why is trhe change in ph with temperature often ignored while the equilibrium constant is directly propotional to temperature????? pls ans soon
What is meant by "weighing by transfer"?when is this used?answer with respect to basic laboratory techniques.
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??
the dissociation of H2S is suppresed by the presence of HCl explain why
Ksp(BaSO4)= 1.5*10-9. find solubility in a)pure water b)0.1 M BaCl2 solution
reached, concentration of C was thrice the equilibrium concentration of B. Calculate KC.
1)- What is the pH of10-8 (N) HCl?
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
IS CHEMICAL EQUILIBRIA IS ALSO TERMED AS DYNAMIC EQUILIBRIUM?
plz explain me ostwald dilution law
what is the difference between solvation and lattice energy?
calculate the pH of 1.0 X 10^ -8 M solution of HCL ?
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