Zadanie 25
Which of these reactions will occur spontaneously? I. KI + Br2 II. KBr + Cl2 III. KCl + Br2 A. I and II only B. I and III only C. II and III only D. I, II and III
Reactivity series of metals and halogens
Predict the relative ease of oxidation of metals and of reduction of halogens from their positions in the periodic table, and interpret displacement reaction data to rank metals and halogens in an activity series.
Tę umiejętność sprawdza 14 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 14 Otwórz w wyszukiwarce z filtrami
Zadanie 26
Both of the reactions below occur spontaneously at room temperature. Zn(s) + Fe2+(aq) → Zn2+(aq) + Fe(s) Fe(s) + Sn2+(aq) → Fe2+(aq) + Sn(s) Which conclusion can be drawn about a voltaic cell built from the half-cells…
Zadanie 2b
Gallium forms a sulfate of formula Ga2(SO4)3. (i) Both ionic and covalent bonding are present in this compound. State which particles are held together by each type of bond. (ii) Contrast covalent and ionic bonds in terms of what happens to the valence…
Zadanie 27
Part of the reactivity series of metals is shown, from the most reactive to the least reactive. Mg, Al, Mn, Zn, Fe, Ni, Sn, Pb, Cu, Ag Which reaction is spontaneous? A. Fe2+(aq) + Ni(s) → Ni2+(aq) + Fe(s) B.…
Zadanie 27
Cadmium was added to separate solutions of silver nitrate and chromium(III) nitrate. Cd(s) + 2 AgNO3(aq) → Cd(NO3)2(aq) + 2 Ag(s) Cd(s) + Cr(NO3)3(aq): no reaction Which list places the three metals in order from most reactive to least reactive?…
Zadanie 5c
(i) Deduce the condensed electron configuration of chlorine. (ii) Describe the bonding in a molecule of chlorine in terms of valence electrons. (iii) Explain why chlorine has a much lower boiling point than bromine, although both exist as simple diatomic…
- Materiał graficzny
Zadanie 3a
Sketch, on the axes, the graphs of the time for complete reaction against the mass of metal that you would expect for sodium and for potassium. Label each line.
- Materiał graficzny
Zadanie 3c
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.
Zadanie 21
The following equations represent reactions that occur spontaneously. Zn(NO3)2(aq) + Mg(s) → Mg(NO3)2(aq) + Zn(s) Cu(NO3)2(aq) + Zn(s) → Zn(NO3)2(aq) + Cu(s) 2 AgNO3(aq) + Cu(s) → Cu(NO3)2(aq) + 2 Ag(s) What is the increasing order of…
Zadanie 23
Aqueous bromine, Br2(aq), is added separately to aqueous potassium chloride and to aqueous potassium iodide. Which statement is correct? A. Bromine reacts with both solutions, oxidizing the chloride ions and the iodide ions. B. Bromine reacts with the…
Zadanie 2a
(i) Identify the oxidation state of metal S in SSO4. (ii) Deduce the order of reactivity of the five metals, from the most reactive to the least reactive.
Zadanie 2b
Sketch the voltaic cell that would produce the greatest cell potential (EMF) using the metals and solutions in this experiment. On your diagram label the metal and the solution in each half-cell, the anode, the cathode, the salt bridge and the direction of…
Zadanie 3b
Suggest an experiment that shows that zinc is more reactive than copper, giving the observation that would confirm this.
Zadanie 17
A student monitors the rate of a reaction using a colorimeter. In which mixture would the absorbance change as the reaction proceeds? A. NaOH(aq) + HNO3(aq) B. KCl(aq) + I2(aq) C. KI(aq) + Cl2(aq) D. CH3COOH(aq) + KOH(aq)