Zadanie 5b
Calculate the oxidation state of sulfur in cobalt(II) disulfide, CoS2.
Wczytuję zadania…
Zapisujemy na Twoim urządzeniu to, bez czego serwis nie działa, np. zalogowanie. Plików analitycznych użyjemy tylko za Twoją zgodą. Szczegóły w polityce prywatności.
Wybierz umiejętność, rok lub poziom trudności.
Pokazujemy tylko poziomy, dla których mamy zadania.
Znaleziono 1476 zadań
Calculate the oxidation state of sulfur in cobalt(II) disulfide, CoS2.
Describe the bonding in solid cobalt, Co(s).
Which oxides form an acidic solution when they react with water? I. sulfur trioxide II. phosphorus(V) oxide III. calcium oxide A. I and II only B. I and III only C. II and III only D. I, II and III
Ozone, O3, is an allotrope of oxygen found in the upper atmosphere. (i) Complete the boxes with arrows to show the ground-state electron configuration of an oxygen atom. (ii) Deduce a Lewis (electron dot) structure of O3 in which every atom has…
Benzene reacts with bromine in the presence of an iron(III) bromide catalyst to form bromobenzene. The reaction is an electrophilic substitution in which the electrophile is Br+. (i) Draw the structural formula of the carbocation intermediate formed as…
Which pair of elements, one from group 1 and one from group 17, is expected to react together least vigorously? A. lithium and chlorine B. lithium and iodine C. sodium and bromine D. potassium and chlorine
Outline how the presence of the silver catalyst affects the rate of the reaction, and explain why.
(i) On the axes below, sketch Maxwell–Boltzmann energy distribution curves for the methanol molecules at two temperatures, T1 and T2, where T2 > T1. (ii) Explain the effect of increasing the temperature on the equilibrium yield of methanal.
(i) Draw the Lewis formula of methanal. (ii) Explain the electron domain geometry around the carbon atom in methanal.
(i) Methanal can be reduced. State the name of the organic product formed. (ii) Methanal can also be oxidized to methanoic acid, HCOOH, which is a weak Brønsted–Lowry acid. State the meaning of the term weak Brønsted–Lowry acid.