JAMB UTME - Chemistry - 1984
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Which of the curves shown in the figure given represents the relationships between the volume(V) and pressure(P) of an ideal gas at constant temperature?
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The diagram above (Fig.3) shows the energy profile for the reaction A + B + = C + D From this diagram, it is clear that the reaction is
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At S. T. P how many litres of hydrogen can be obtained from the reaction of 500 cm3 of 0.5 M H 2SO 4 with excess zinc metal?
(Gram molecular volume of H2 = 22. 4 dm 3)
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For the reaction \( \mathrm{NH_4NO_2 \rightarrow N_2 + 2H_2O} \), calculate the volume of nitrogen that would be produced at S. T. P from 320 g of the dioxonitrate(iii)salt. (Relative atomic masses: N = 14, O = 16, H = 1)
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The solubility curves of four substances are shown in the figure above. Which of the four substances would crystallize from a saturated solution cooled from 353K(80oC)to 323K(50C)?
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The I.U.P.A.C name for the compound is
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Use the diagram above to answer this question.
Which of the following structural formula is NOT isomeric with the others?
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2V 1V 2V
20cm3 20cm3 -------
20cm3 10cm3 20cm3
Residual gas = 20cm3 - 10cm3 of 02 = 103
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Use the diagram above to answer this question.
Which of the following represents a carboxylic acid?
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\(3\mathrm{Cl}_2 + 2\mathrm{NH}_3 \rightarrow \mathrm{N}_2 + 6\mathrm{HCl}\). In the above reaction, ammonia acts as
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An organic compound with a vapour density 56.5 has the following percentage composition:C =53.1% N = 12.4%, O = 28.3%, H = 6.2%. The molecular formula of the compound is
Relative atomic masses: N = 14, O = 16, C = 12, H = 1 )
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From the reactions: \( \mathrm{ZnO + Na_2O \rightarrow NaZnO} \) and \( \mathrm{ZnO + CO_2 \rightarrow ZnCO_3} \) it may be concluded that zinc oxide is
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Question 39 Report
In dilute solution the heat of the reaction \( \mathrm{NaOH + HCl = NaCl + H_2O} \) is - 57.3kJ. Therefore the heat of the reaction \( \mathrm{2NaOH + H_2SO_4 \rightarrow Na_2SO_4 + 2H_2O} \) is
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Heat of reaction of 2NaOH + H2O4
NaSO4 + H2O is
= 57.3 x 2 = -114.6 kJ
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For the reaction \(2\mathrm{Fe}^{3+} + 2\mathrm{I}^{-} \rightarrow 2\mathrm{Fe}^{2+} + \mathrm{I}_2\), which of the following statements is TRUE?
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