Magnesium chloride hexahydrate (MgCl2·6H2O) can be prepared by the following reaction: MgO(s) + 2HCl(aq) + 5H2O(l)...
Magnesium chloride hexahydrate (MgCl2·6H2O) can be prepared by the following reaction: MgO(s) + 2HCl(aq) + 5H2O(l) ⟶ MgCl2∙6H2O(s) ΔH°rxn = -133 kJ/mol What is the standard molar enthalpy of formation of magnesium chloride hexahydrate in kJ/mol?
ΔH°f(MgO)=-602 kJ/mol
ΔH°f(HCl)=-167 kJ/mol
ΔH°f(H2O)=-286 kJ/mol
a) -1444 b) -133 c) -2499
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Magnesium chloride hexahydrate (MgCl2·6H2O) can be prepared by
the following reaction: MgO(s) + 2HCl(aq) + 5H2O(l)...
Using the Hess Law and the thermochemical equations below, MgO(s) + + 2HCl(aq) ------> MgCl2(g) ...
Using the Hess Law and the thermochemical equations below, MgO(s) + + 2HCl(aq) ------> MgCl2(g) + H2O(l) ΔHrxn = -111.7 kJ/mol Mg(s) + 2 HCl(aq) ------> MgCl2(g) + H2(g) ΔHrxn = -548.3 kJ/mol H2(g) + 1/2 O2(g) ------> H2O(l) ΔHrxn = -142.9 kJ/mol find the heat of reaction of the following: (0.25 pt.) Mg(s) + 1/2 O2(g) ------> MgO(g) ΔHrxn = ? b) If the theoretical enthalpy of this reaction is -602 kJ/mol,...
a) Using the Hess Law and the thermochemical equations below, MgO(s) + + 2HCl(aq) ------>...
a) Using the Hess Law and the thermochemical equations below, MgO(s) + + 2HCl(aq) ------> MgCl2(g) + H2O(l) ΔHrxn = -111.7 kJ/mol Mg(s) + 2 HCl(aq) ------> MgCl2(g) + H2(g) ΔHrxn = -548.3 kJ/mol H2(g) + 1/2 O2(g) ------> H2O(l) ΔHrxn = -142.9 kJ/mol find the heat of reaction of the following: Mg(s) + 1/2 O2(g) ------> MgO(g) ΔHrxn = ? b) If the theoretical enthalpy of this reaction is -602 kJ/mol, calculate the percent error
What is the correct overall reaction (combustion of magnesium)? MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(g)
What is the correct overall reaction (combustion of magnesium)? MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(g)
Balanced equation : MgO(s)+2HCl(aq)->MgCl2(aq)+H2 H= -151kJ b. How many grams of magnesium oxide are required to...
Balanced equation : MgO(s)+2HCl(aq)->MgCl2(aq)+H2 H=
-151kJ
b. How many grams of magnesium oxide are required to react with excess hydrochloric acid to release 1.4 kJ of heat?
The average ΔHrxn for MgO (s) + 2 HCl (aq) --> MgCl2(aq) + H2O (l) is...
The average ΔHrxn for MgO (s) + 2 HCl (aq) --> MgCl2(aq) + H2O (l) is -150. kJ/mol What would be the ΔHrxn for the following reaction: MgCl2(aq) + H2O (l) --> MgO (s) + 2HCl (aq) Group of answer choices +300. kJ/mol -150. kJ/mol +150. kJ/mol +75.0 kJ/mol 2. The average ΔHrxn for Mg (s) + 2 HCl (aq) --> MgCl2(aq) + H2(g) is -466 kJ/mol What would be the ΔHrxnfor the following reaction: 2 MgCl2(aq) + 2 H2(g)...
Part A) What is ΔH∘rxn for the following chemical reaction? CO2(g)+2KOH(s)→H2O(g)+K2CO3(s) You can use the following...
Part A) What is ΔH∘rxn for the following chemical reaction? CO2(g)+2KOH(s)→H2O(g)+K2CO3(s) You can use the following table of standard heats of formation (ΔH∘f) to calculate the enthalpy of the given reaction. Element/ Compound Standard Heat of Formation (kJ/mol) Element/ Compound Standard Heat of Formation (kJ/mol) H(g) 218 N(g) 473 H2(g) 0 O2(g) 0 KOH(s) −424.7 O(g) 249 CO2(g) −393.5 K2CO3(s) −1150kJ C(g) 71 H2O(g) −241.8kJ C(s) 0 HNO3(aq) −206.6 Express the standard enthalpy of reaction to three significant figures and...
Balanced equation : MgO(s)+2HCl(aq)->MgCl2(aq)+H2 H=
-151kJ
b. How many grams of magnesium oxide are required to react with excess hydrochloric acid to release 1.4 kJ of heat?
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