Ideal Solutions

Q. The values of }K_{sp} of }CaCO_3 and }CaC_2O_4 are }4.7×10^{-9} and }1.3×10^{-9} respectively at }25^° C . If } the mixture of these two is washed with water, } what is the concentration of }Ca^{2+} ions in water? } (1) }7.746×10^{-5}M (4) }5.831×10^{-5}M (3) }6.856×10^{-5}M (4) }3.606×10^{-5}M

Q. For an ideal solution, the correct option is:

1. ${△}_{mix}S$ = 0 at constant T and P
2. ${△}_{mix}V$ $\ne$ 0 at constant T and P
3. ${△}_{mix}H$ = 0 at constant T and P
4. ${△}_{mix}G$ = 0 at constant T and P

Q. 46 A 0.01 M ammonia solution is 5% ionised. The concentration of OH- ion is A 0.005M B 0.0001M C 0.0005M D 0.05M

Q.

Which condition is not satisfied by an ideal solution?

1. ${∆}_{\mathrm{mix}}\mathrm{H}=0$

2. ${∆}_{\mathrm{mix}}\mathrm{V}=0$

3. ${∆}_{\mathrm{mix}}\mathrm{S}=0$

4. Obeyance of Raoults law

Q. The mass of NaOH required for complete neutralisation of 1 g molecules of H2SO4 is ? (molar mass of NaOH = 40 g/mole, H2SO4 = 98 g/mole) Given reaction 2NaOH + H2SO4 → Na2SO4 + 2H2O

Q.

Which one of the following is non-ideal solution?

1. Benzene + toluene
2. n-hexane + n-heptane
3. Ethyl bromide + ethyl iodide
4. CCl₄ + CHCl₃

Q. An aqueous solution of urea is 10% w/v The volume in which 1 mole of urea is present, will be

Q. Consider the following reaction Zn+2HCl→ ZnCl_2+H_2 If 520 mL of Hydrogen gas is collected over water at 28 celsius and the atmospheric pressure is 1 atm If vapour pressure of water at 28 celsius is 28.33 mm Hg. Then the amount of Zn(in gram) taken at the start of the reaction(assume all Zn(s) gets converted in product, molar mass of Zn is 65 g/mol

Q. The molar concentration of Ht ion when 300 ml ofwater is added in 0.1 M 200 ml of H2SO, solution is(1) 0.08 M(3) 0.01 M(2) 0.1 M(4) 0.8 M

Q. Q. Commercially available concentrated hcl contains 40% hcl by mass and density 1.20 gm cm^-3. What is the normality of the solution?

Q. liquid having highest vapour pressure in the following at 298K is 1)C2H5OC2H5 2)H2O 3)CCl4 4)C2H5O

Q. calculate the volume of water to be added to 400ml of seminormal HCl solution to make it decinormal

Q. What is geometric isomer ?

Q. When Cu2S is converted into Cu+2 and SO2 then equivalent.

Q. what is effect of increase in temperature and pressure on the following system at equilibrium N2(g)+3H2(g)<-------->NH3+HEAT

Q. calculate the number of moles and number of grams of Na2So4 which contain 1*10^23 sulphate ions

Q. for N2 +3H2 =2NH3 △ H=-93.6KJ/MOLE. THE CONCENTRATION OF H2 AT EQUILIBRIUM INCREASES IF forN2+3H2=2NH3\bigtriangleup H=-93.6KJ/MOLE.THECONCENTRATIONOFH2ATEQUILIBRIUMINCREASESIF a\} Tempreture descreases. b\} N2 is added at cons†an t volume c\} NH3 is removed d\} volume of system descreased

Q. Law of equivalence

Q. Why the sum of 3.368kg and 2.02kg in correct significant figures 5.39 and not 5.38?

Q. Alpha D glucose equilibrium Beta D glucose, equilibrium constant for this is 1.8 the percentage of alpha D glucose at equilibrium is?? 1) 35.7 2) 55.6 3)44.4 4)64.3

Q.

When 5.85 g of NaCl and 6 g of urea are dissolved in 1000 g of water, the freezing point gets depressed by $K_f$ for water is 1.86

1. 1.86

2. 0.186

3. 0.372

4. 0.558

Q.

Equal volumes of 0.1M $AgN{O}_3$ and 0.2 M NaCl are mixed together. The concentration of nitrate ions in the resulting mixture is:

1. 0.1M

2. 0.05M

3. 0.2M

4. 0.15M

Q. What are the Boyle s laws?

Q. Q. Commercially available concentrated hcl contains 40% hcl by mass and density 1.20 gm cm^-3. What is the normality of the solution?

Q. 25.7.45GOFKCL and 11.7g of Nacl are mixed in 2000ml of water. Assuming no change in volume, the total mass of chloride ions in the solution is (1)10.65 (2)106.5 (3)15.7 (4)5.3

Q. how many grams of Zn are required to liberate 2.24 litres of hydrogen from sulphuric acid ​

Q. The standard reduction potentials for $Z{n}^{2+}/Zn,N{i}^{2+}/Ni,$ and $F{e}^{2+}/Fe$ are $-0.76,-0.23$ and $-0.44V$ respectively. The reaction $X+Y^{2+}\to X^{2+}+Y$ will be spontaneous when :
(AIEEE 2012)

1. $X=Fe,Y=Zn$
2. $X=Ni,Y=Zn$
3. $X=Zn,Y=Ni$
4. $X=Ni,Y=Fe$

Q. Two liquids $\text{A}$ and $\text{B}$ have ${P^{\circ }}_A:{P^{\circ }}_B=1:3$ at a certain temperature. If the mole fraction ratio of $x_A:x_B=1:3$, the mole fraction of $\text{A}$ in vapour in equilibrium with the solution at a given temperature is

1. 0.1
2. 0.2
3. 0.5
4. 1

Q. 14. 200 mL of 0.05 N KOH is mixed with 400 mL of0.05 N HNO3 and heat released X_1 was noted.If instead of 400 mL of 0.05 N HNO3, 300 mL0.05 M HNO3 is taken, then choose the correct option for KOH, so that the heat released X_2 is equal to X1/2 ? (1) 300 mL, 0.05 M(2) 200 mL, 0.05 M (3)200 mL, 0.025 M(4) 300 mL, 0.025 M

Q.

Equal volumes of 0.1M $AgN{O}_3$ and 0.2 M NaCl are mixed together. The concentration of nitrate ions in the resulting mixture is:

1. 0.1M

2. 0.05M

3. 0.2M

4. 0.15M