Zadania z chemii IB SL

Propene can be converted into propan-2-ol in a single reaction. State the equation for this conversion.

Propan-2-ol reacts with tetradecanoic acid to produce propan-2-yl tetradecanoate, an ester used in skin creams. $\ce{C13H27COOH(l) + CH3CH(OH)CH3(l) <=> C13H27COOCH(CH3)2(l) + X(l)}$ (i) Identify the by-product X(l). (ii) Calculate the atom economy of this…

A rigid cylinder of fixed volume contains $N$ molecules of an ideal gas at 200 K and a pressure of 80 kPa. Half of the molecules are removed and the temperature of the remaining gas is raised to 500 K. What is the new pressure of the gas, in kPa? A. 16 B. 40…

(i) Write an equation for the homolytic fission of a bromine molecule under UV light, using curly arrows to show the movement of electrons. (ii) Under different conditions a bromine molecule can undergo heterolytic fission. Write an equation for this process,…

The graph shows the boiling points of five straight-chain carboxylic acids and of the five methyl esters that have the same relative formula masses as the acids. (i) Outline why the carboxylic acids have higher boiling points than the esters with the same…

Nitric acid is a strong acid manufactured on a large scale. A pH probe is immersed in a small volume of $0.010\ \mathrm{mol\,dm^{-3}}$ nitric acid. The pH is recorded while distilled water is added to the acid at a steady rate and at constant temperature. (i)…

What is the formula of the compound formed between aluminium ions and sulfate ions? A. $\ce{AlSO4}$ B. $\ce{Al2(SO4)3}$ C. $\ce{Al(SO4)3}$ D. $\ce{Al3(SO4)2}$

Which species contains a coordination bond? A. $\ce{NH3}$ B. $\ce{H3O+}$ C. $\ce{CH4}$ D. $\ce{BF3}$

Which properties of copper depend on the movement of its delocalized electrons? I. electrical conductivity of the molten metal II. thermal conductivity III. high density A. I and II only B. I and III only C. II and III only D. I, II and III