Question
Write the structure of A, B, C, D and E in the following reactions:
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- Chemistry of actinoids is complicated as compared to lanthanoids. Give two reasons.
Answer the following questions:
Give chemical reactions for the following observations:
Give chemical reactions for the following observations:
- Potassium permanganate is a good oxidising agent in basic medium.
- Inter convertibility of chromate ion and dichromate ion in aqueous solution depends upon pH of the solution.
- Potassium permanganate is thermally unstable at 513K.
Draw the structures of optical isomers of :
(i) $\left[ Cr \left( C _2 O _4\right)_3\right]^{3-}$
(ii) $\left[ PtCl _2( en )_2\right]^{2+}$
(iii) $\left[ Cr \left( NH _3\right)_2 Cl _2( en )\right]^{+}$
→(i) $\left[ Cr \left( C _2 O _4\right)_3\right]^{3-}$
(ii) $\left[ PtCl _2( en )_2\right]^{2+}$
(iii) $\left[ Cr \left( NH _3\right)_2 Cl _2( en )\right]^{+}$
Magnetic properties of coordination compounds. Explain in detail.
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 |
Derive the equation required for finding the activation energy.
Write the formulas for the following coordination compounds:
a. Tetraammineaquachloridocobalt(III) chloride
b. Potassium tetrahydroxidozincate(II)
c. Potassium trioxalatoaluminate(III)
d. Dichloridobis(ethane-1, 2-diamine)cobalt(III)
e. Tetracarbonylnickel(0)
a. Tetraammineaquachloridocobalt(III) chloride
b. Potassium tetrahydroxidozincate(II)
c. Potassium trioxalatoaluminate(III)
d. Dichloridobis(ethane-1, 2-diamine)cobalt(III)
e. Tetracarbonylnickel(0)
The experimental data for decomposition of N2O5
[2N2O5 → 4NO2 + O2]
in gas phase at 318K are given below:
[2N2O5 → 4NO2 + O2]
in gas phase at 318K are given below:
| t/s | 0 | 400 | 800 | 1200 | 1600 | 2000 | 2400 | 2800 | 3200 |
| 102 × [N2O5]/mol L-1 | 1.63 | 1.36 | 1.14 | 0.93 | 0.78 | 0.64 | 0.53 | 0.43 | 0.35 |
- Plot [N2O5] against t.
- Find the half-life period for the reaction.
- Draw a graph between log[N2O5] and t.
- What is the rate law?
- Calculate the rate constant.
- Calculate the half-life period from k and compare it with (ii).