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Vapour pressure of pure acetone and chloroform at 328 K are 741.8 mm Hg and 632.8 mm Hg respectively. Assuming that they form ideal solution over the entire range of composition, plot Ptotal, `P_"chloroform"` and `P_"acetone"` as a function of `chi_"acetone"`. The experimental data observed for different compositions of mixtures is:
| `bb(100 xx chi_"acetone")` | `bb(P_"acetone"//"mm Hg")` | `bb(P_"chloroform"//"mm Hg")` |
| 0 | 0 | 632.8 |
| 11.8 | 54.9 | 548.1 |
| 23.4 | 110.1 | 469.4 |
| 36.0 | 202.4 | 359.7 |
| 50.8 | 322.7 | 257.7 |
| 58.2 | 405.9 | 193.6 |
| 64.5 | 454.1 | 161.2 |
| 72.1 | 521.1 | 120.7 |
Plot this data also on the same graph paper. Indicate whether it has a positive or negative deviation from the ideal solution.
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If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire?
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Suggest a list of metals that are extracted electrolytically.
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Consider the reaction:
\[\ce{Cr2O^{2-}_7 + 14H+ + 6e- -> 2Cr^{3+} + 7H2O}\]
What is the quantity of electricity in coulombs needed to reduce 1 mol of \[\ce{Cr2O^{2-}_7}\]?
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How much charge is required for the following reduction?
1 mol of Al3+ to Al.
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How much charge is required for the following reduction?
1 mol of Cu2+ to Cu.
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How much charge is required for the following reduction?
1 mol of \[\ce{MnO^-_4}\] to Mn2+.
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A solution of Ni(NO3)2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode?
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Three electrolytic cells A, B, C containing solutions of ZnSO4, AgNO3 and CuSO4, respectively, are connected in series. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?
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Why is the ester hydrolysis slow in the beginning and becomes faster after sometime?
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What are enzymes? Write in brief the mechanism of enzyme catalysis.
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Name the processes from which chlorine is obtained as a by-product.
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[NiCl4]2− is paramagnetic while [Ni(CO)4] is diamagnetic though both are tetrahedral. Why?
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[Fe(H2O)6]3+ is strongly paramagnetic whereas [Fe(CN)6]3− is weakly paramagnetic. Explain.
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Explain [Co(NH3)6]3+ is an inner orbital complex, whereas [Ni(NH3)6]2+ is an outer orbital complex.
[At. No.: Co = 27, Ni = 28]
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Amongst the following ions, which one has the highest magnetic moment value?
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How the following conversion can be carried out?
Chlorobenzene to p-nitrophenol
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List the important sources of sulphur.
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Write the order of thermal stability of the hydrides of Group 16 elements.
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Why is H2O a liquid and H2S a gas?
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