Question
Describe graphically the experimental method of measuring the conductivity of electrolyte solutions (ionic solution).
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Similar questions
Match the complex species given in Column I with the possible isomerism given in Column II and assign the correct code:
| | Column I (Complex species) | | Column II (Isomerism) |
| a. | [Co(NH3)4Cl2]+ | 1. | Optical |
| b. | cis-[Co(en)2Cl2]+ | 2. | Ionisation |
| c. | [Co(NH3)5 (NO2)]Cl2 | 3. | Coordination |
| d. | [Co(NH3)6][Cr(CN)6] | 4. | Geometrical |
| | | 5. | Linkage |
Code:
- A (1), B (2), C (4), D (5).
- A (4), B (3), C (2), D (1).
- A (4), B (1), C (5), D (3).
- A (4), B (1), C (2), D (3).
- Name the element of 3d transition series which shows maximum number of oxidation states. Why does it show so?
- which transition metal of 3d series has positive Eo(M2+/M) value and why?
- Out of Cr3+ and Mn3+, which is a stronger oxidizing agent and why?
- Name a member of the lanthanoid series which is well known to exhibit +2 oxidation state.
- Complete the following equation:
MnO-4+8H++5e-$→$
- State Raoult’s law for a solution containing volatile components.
How does Raoult’s law become a special case of Henry’s law?
- 1.00 g of a non-electrolyte solute dissolved in 50 g of benzene lowered the freezing point of benzene by 0.40 K. Find the molar mass of the solute. (Kf for benzene= 5.12 kg mol-1).
(i) Define molecularity of a reaction.
(ii) Explain the effect of presence of catalyst on the rate of reaction.
(iii) In a first order reaction at 300 K , the initial concentration of the reactant was $1.0 \times 10^{-2} mol L ^{-1}$, which decreased to $0.5 \times 10^{-2} molL ^{-1}$ after 30 minutes at 300 K . Calculate the rate constant of the reactant at 300 K. $[\log 2=0.3010] \quad$
→(ii) Explain the effect of presence of catalyst on the rate of reaction.
(iii) In a first order reaction at 300 K , the initial concentration of the reactant was $1.0 \times 10^{-2} mol L ^{-1}$, which decreased to $0.5 \times 10^{-2} molL ^{-1}$ after 30 minutes at 300 K . Calculate the rate constant of the reactant at 300 K. $[\log 2=0.3010] \quad$
Match the compounds/elements given in Column I with uses given in Column II.
| | Column I (Compound/element) | | Column II (Use) |
| (i) | Lanthanoid oxide | (a) | Production of iron alloy |
| (ii) | Lanthanoid | (b) | Television screen |
| (iii) | Misch metal | (c) | Petroleum cracking |
| (iv) | Magnesium based alloy is constituent of | (d) | Lanthanoid metal + iron |
| (v) | Mixed oxides of lanthanoids are employed | (e) | Bullets |
| | | (f) | In X-ray screen |
Answer the following question:
The graphical representation of vapour pressures of two component system as a function of composition is given alongside. By graphic inspection, answer the following questions:
→The graphical representation of vapour pressures of two component system as a function of composition is given alongside. By graphic inspection, answer the following questions:
- Are the A-B interactions weaker, stronger or of the same magnitude as A-A and B-B?
- Name the type of deviation shown by this system from Raoult’s law.
- Predict the sign of $\Delta_\text{mix}\text{H}$ for this system.
- Predict the sign of $\Delta_\text{mix}\text{H}$ for this system.
- Give an example of such a system.
- What type of azeotrope will this system form, if possible?
Magnetic properties of coordination compounds. Explain in detail.
Describe the nucleophilic addition- elimination reactions of carbonyl compounds with reference to their reaction with the following compounds:
(i) Alcohol and thio alcohol
(ii) Ammonia and its derivatives
(i) Alcohol and thio alcohol
(ii) Ammonia and its derivatives
The decomposition of a hydrocarbon follows the equation.
→$\text{k}=(4.5\times10^{11}\text{s}^{-1})\text{e}^{-28000}\text{ K/T}$
Calculate Ea.
- With reference to structural variability and chemical reactivity, write the differences between lanthanoids and actinoids.
- Name a member of the lanthanoid series which is well known to exhibit +4 oxidation state.
- Complete the following equation:
$\text{MnO}_{4}^{-}+\text{8H}^{+}+\text{5e}^{-}\rightarrow$
- Out of Mn3+ and Cr3+, which is more paramagnetic and why?
(Atomic nos: Mn = 25, Cr = 24).