Fo lattice energy, ions should be in gas phase.
The compound is MgCl2.
The ions forming this compounds are Mg2+(aq) + 2 Cl-(aq)
This is should by option 4
Answer: option 4
The lattice energy of MgCl2 is the energy change for which one of the following processes?...
The lattice energy of MgCl2 is the energy change for which one of the following processes? Mg(s) + Cl2(g) +MgCl2(s) Mg2+(s) + 2(g) MgCl2(8) Mg(g) + 2Cl(g) — MgCl2(s) Mg?*(e) + 2Cl(s) — MgCl2(s) MgCl2(aq) — MgCl2(s)
Using the Born-Haber cycle shown below, calculate the lattice energy for MgCl2 in kJ* mol-1 Mg**g) + 2Cl(g) 2 x-349 AH2nd le(Mg) - 1451 2xAH (01) --698 My*(g) 2013) Mg (g) + 2Cl(g) AHORE (Mg) - 738 Mg(g) + 2Cl(g) 2 x 122 2xAH CIT- +244 Mg(g) + Cl2(g) AHTE (MgCl2) Mg(s) + Clą(9) AHM9) - 148 AH, (MgCl2) --641 MgCl (s)
Which equation represents the heat of formation, ∆Hf, for MgCl2? Mg2+(aq) + 2 Cl– → MgCl2(s) Mg(s) + 2 Cl(g) → MgCl2(s) MgCl2(s) → Mg2+(aq) + 2 Cl–(aq) Mg(s) + Cl2(g) → MgCl2(s)
A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge.Cl2(g) +Mg(s) ----------> 2Cl-(aq)+ Mg2+(aq)The anode reaction (including states) is:The cathode reaction (including states) is:In the external circuit, electrons migrate _____fromto the Mg|Mg2+ electrode _____fromto the Cl-|Cl2 electrode.In the salt bridge, anions migrate _____fromto the Cl-|Cl2 compartment _____fromto the Mg|Mg2+compartment.
The standard enthalpy change for the following reaction is 641 kJ at 298 K. MgCl2(s) Mg(s) + Cl2(g) ΔH° = 641 kJ What is the standard enthalpy change for this reaction at 298 K? Mg(s) + Cl2(g) MgCl2(s)
QUESTION 3 What is the balanced equation for the galvanic cell reaction expressed using shorthand notation below? Mg(s) Mg2+(aq) il Cl26) Chaq) C(s) A Mg(s) + 2 CH-(aq) Mg2+(aq) + Cl2(g) B. Mg(s) + Cl2(g) → Mg2+(aq) + 2 CHaq) Mg2+(aq) + 2 Cl-(aq) → Mg(s) + Cl2(g) D. Mg2+(aq) + 2 CH-(aq) – MgCl2(5)
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Using the Born-Haber cycle shown below, calculate the lattice energy for MgCl2 in kJ* mol-1 Mg*g) + 2Cl(g) 2 -349 AH2nd (Mg) - 1451 2xAH (01) --698 Mg*9) 2C119) Mg'ig)2Cl(g) 2x+122 AH. Pot (Mg) - 738 Mg(g) + 2Cl(g) 2xAH LCI - +244 Mgig). Clz (9 Mg(s) : AH (Mg) - 148 Cl2(g) AHTE MgCI) AH. (MgCl) --641 MgCl (s)
Question 5 [11 marks] A seawater which serves as a useful commercial source of magnesium compounds contains a magnesium ion concentration of 0.054 mol dm? The magnesium is precipitated from solution by adding calcium hydroxide. Mg2+ (aq) + Ca(OH)2 (s) → Ca2+(aq) + Mg(OH)2 (s) a) Write an expression for the Ksp of Mg(OH)2, including its units. [3] b) [2] ) The numerical value for Ks is 2.00 x 10-11. Calculate [Mg2+ (aq)] in a saturated solution of Mg(OH)2. Hence...
The change in energy for which of the following processes corresponds to the first ionization energy of barium? a. Ba(s) + eBa () b. Ba(s) - Ba'(g) + e C. Ba(g) Ba*(g) + e d. Ba(g) - Ba2+(g) + 2e e. Ba(s) - Bat(s) +
Consider the following half-reactions: Half-reaction E° (V) Cl2(g) + 2e - →2Cl(aq) 1.360V Ni2+(aq) + 2e Ni(s) -0.250V Mg- (aq) + 2e → Mg(s) -2.370v (1) The weakest oxidizing agent is: enter formula (2) The strongest reducing agent is: (3) The strongest oxidizing agent is: (4) The weakest reducing agent is: (5) Will Cl(aq) reduce Mg2+(aq) to Mg(s)? (6) Which species can be reduced by Ni(s)? If none, leave box blank.