JAMB UTME - Chemistry - 1985

The diagram shown above represents the solubility curves of two salts, X and Y, in water, use this diagram to answer the question. If 80 g each of X and Y are taken up in 100 g of water at 353 K we shall have

In the reaction \( \mathrm{H_2(g)O \rightarrow H_2(g) + \frac{1}{2}O_2(g)} \)

\( \Delta H = -2436000\ \mathrm{KJ} \), which of the following has no effect on the equilibrium position?

Use the following option above to answer this question. Which of the following is the functional group of carboxylic acids?

Figure 1 above shows part of the periodic Table which of the elements belongs to the p-block?

The diagram shown above represents the solubility curves of two salts, X and Y, in water, use this diagram to answer the question. At room temperature (300 K)

The I.U.P.A.C name for the compound

The oxidation of

A colourless organic compound X was burnt in excess air to give two colourless and odourless gases, Y and Z, as products. X does not decolorize blue bromine vapour, Y turns lime milky while Z gives a blue colour with copper (ll) tetraoxosulphate (IV).

Y and Z are respectively?

A certain industrial process is represented by the chemical equation \(2\mathrm{A}(g) + \mathrm{B}(g) \rightarrow \mathrm{C}(g) + 3\mathrm{D}(g)\quad \Delta H = X\ \mathrm{kJmol}^{-1}\). Which of the following conditions will favour the yield of the products?

A colourless organic compound X was burnt in excess air to give two colourless and odourless gases, Y and Z, as products. X does not decolorize blue bromine vapour, Y turns lime milky while Z gives a blue colour with copper (ll) tetraoxosulphate (IV).

Compound X is?

Copper sulphate solution is electolysed using platinum electrodes A. current of 0.193 amperes is passed for 2hrs. How many grams of copper are deposited? (cu = 63.5, F = 96500 coulombs)

Use the above options to the question. The products formed on hydrolysis of

The diagram shown above represents the solubility curves of two salts, X and Y, in water, use this diagram to answer the question. If the molar mass of X is 36 g, the number of moles of X dissolved at 343 K is