Zadanie 3d
The Maxwell-Boltzmann distribution for the uncatalysed reaction at temperature T1 is shown below. Add annotations to show how a catalyst changes the situation.
- Materiał graficzny
Zapisujemy na Twoim urządzeniu to, bez czego serwis nie działa, np. zalogowanie. Plików analitycznych użyjemy tylko za Twoją zgodą. Szczegóły w polityce prywatności.
Baza zadań
Wybierz umiejętność, rok lub poziom trudności. Każde zadanie ma klucz i schemat punktowania.
Pokazujemy tylko poziomy, dla których mamy zadania.
Znaleziono 1061 zadań
The Maxwell-Boltzmann distribution for the uncatalysed reaction at temperature T1 is shown below. Add annotations to show how a catalyst changes the situation.
Potassium bromide, KBr, forms a three-dimensional lattice of ions. (i) Demonstrate how the electronegativity values and bonding triangle in sections 9 and 17 of the data booklet support an ionic model for this solid. (ii) Outline the nature of the…
Sodium metal is manufactured by the electrolysis of molten sodium chloride. (i) Outline why sodium can be produced by electrolysis rather than by reduction with carbon. (ii) State the half-equation for the formation of sodium during the electrolysis.
Ethane-1,2-diol has the molecular formula C2H6O2. Which statement about its empirical formula is correct? A. It is CH3O, because it shows the simplest whole-number ratio of the atoms of each element B. It is C2H6O2, because it shows the…
(i) State one environmental problem caused by acid rain. (ii) Write an equation for the reaction of sulfur trioxide, SO3, with water in the atmosphere, in which an acid forms.
Potassium oxide, 0.0150 mol, was dissolved in water and the solution was made up to a final volume of 250.0 cm3. (i) Write a balanced equation for the reaction of potassium oxide with water. (ii) Calculate the pH of the solution.
Hydrogen fluoride, HF, released by aluminium smelters, dissolves in water to form a weak acid. HF(aq) + H2O(l) ⇌ H3O+(aq) + F−(aq) (i) State the equilibrium constant expression, Kc, for this reaction. (ii) State, with a reason, the…
Outline why the ionic radius of the sulfide ion, S2−, is greater than that of the chloride ion, Cl−.
An alloy contains three copper atoms for every zinc atom. Calculate the percentage by mass of copper in the alloy. Use section 7 of the data booklet.
Which species are present after 14 dm3 of ethyne has reacted with 20 dm3 of hydrogen to produce ethane? All gas volumes are measured at the same temperature and pressure. C2H2(g) + 2 H2(g) → C2H6(g) A. 14 dm3 of…