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In the reaction MgCl2 plus 2KOH gives magnesium hydroxide plus 2KCl how many moles of KOH react with 1 mole of MgCl2?
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Grace Brekke
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How amonia gas is prepared?
Laboratory preparation of ammonia or NH3 requires using ammonium chloride and calcium hydroxide. The reaction equation is 2NH4Cl plus CaOH2 gives the products 2NH3 plus CaCl2 plus 2H2O. The ammonium chloride and calcium hydroxide are heated for this reaction.
What ions are formed when KNO3 is dissolved in water?
potassium ion and hydroxyl ion will be produced and solution is alkaline
In the reaction FeCl2 plus 2NaOH gives iron II hydroxide plus 2NaCl 6 moles of FeCl2 are added to 6 moles of NaOH how many moles of FeCl2 would be used up in the reaction?
3 mole FeCl2 will react with 6 mole NaOH (stoechiometric mole ratio: 1 FeCl2 to 2 NaOH), so 3 mole FeCl2 (= 6 added -3 used) will be left over.
Energy is taken in causing the temprture to go down?
A reaction characterized by or causing the absorption of heat is called an endothermic or endoergic reaction.
What releases water and energy?
Combustion of hydrogen gives a lot of heat and water. The stoichiometric reaction of hydrogen with oxygen is: 2H2(g) + O2(g) gives 2H2O(l) + 572 kJ Hydrogen's Enthalpy of Combustion is 286 kJ/mole
In the reaction MgCl2 plus 2KOH gives magnesium hydroxide plus 2KCl if 3 moles of MgCl2 are added to 4 moles KOH what determines how much magnesium hydroxide is made?
MgCl2(aq) + 2KOH(aq) --> Mg(OH)2(s) + 2KCl(aq)It is the molar ratio in the equation. Every mole of magnesium chloride requires 2 moles of potassium hydroxide. Thus 3 moles would need 6 moles of alkali for complete reaction. We don't have that much, so potassium hydroxide is the limiting reactant and we can only use 2 moles of the magnesium chloride and produce 2 moles of magnesium hydroxide.
What is the reaction between hydrochloric acid and magnesium?
These two substances readily react to produce magnesium chloride and hydrogen gas, The reaction equation is Mg(s)+ 2HCl(aq) = MgCl2(aq) + H2(g)
What type of reaction is Mg and Cl2 gives MgCl2?
a displacement reaction, magnesium displaces hydrogen because it is more reactive
What is the balanced equation for Magnesium plus hydrochloric gives rise to magnesium chloride plus hydrogen?
Mg + 2HCl --> MgCl2 + H2
Chemical equation for magnesium oxide and hydrochloric acid?
: since Magnesium oxide is a insoluble oxide but Magnesium chloride is a soluble salt, : chemical equation : : HCL(aq) + MgO(s) -----> MgCl(aq) + H2O(l) : HENCE, : ionic equation of Hydrochloric acid and Magnesium oxide: : H+(aq) + MgO(s) ----> Mg2+(aq) + H20(l)
Does MgCl2 follow the octet rule?
Yes. Magnesium gives up 2 electrons and goes down to a lower electron shell with a full octet. Each chlorine gains 1 electron from the magnesium to complete its octet.
What happens if magnesium reacts with water?
Magnesium and water...Formula= magnesium + water --> magnesium hydroxide + hydrogenThe magnesium floats on the surface, this is a slow reaction but it much quicker with steam...Tiny bubbles of hydrogen form on the surface and gives off hydrogen gas. This is an alkali although the metal itself isn't.Magnesium and steam...Formula= magnesium + steam --> magnesium oxide + hydrogenThe magnesium reacts extremely quickly and bubbles form on the surface as it fizzes and pops it is a very vigorous reaction. But it eventually stops because the magnesium hydroxide formed is almost insoluble in water and forms a barrier on the magnesium preventing any further reaction.Mia StradlingMagnesium metals are not affected by water at room temperature. Magnesium generally is a slow-reacting element, but reactivity increases with oxygen levels. Furthermore, magnesium reacts with water vapor to magnesium hydroxide and hydrogen gas:Mg (s) + 2H2O(g) -> Mg(OH)2(aq) + H2(g)Mg0 - 2e -> Mg2+ reducer, oxidation2H+ + 2e -> H20 oxidant, reduction
Is ammonium hydroxide an akali or an acid?
Ammonium hydroxide is an alkali because it gives OH- ions in water and gives a salt on reaction with an acid.
Is the chemical reaction for the combustion of magnesium endothermic or exothermic?
Exothermic (gives off heat - and light!).
The molar solubility of magnesium hydroxide MgOH2 in water is 1.4 x10-4M. What is the Ksp of magnesium hydroxide?
Mg(OH)2 --> Mg2+ + 2 OH - Each mole of magnesium hydroxide gives 1 mole of mamgnesium ions and 2 moles of hydroxide ions. Therefore, Ksp = [Mg2+] [2 OH -]2 Let solubility of magnesium hydroxide be s. Therefore, we get s as the concentration of magnesium ions and (2s)2 as the solubility of hydroxide ions. s = 1.4 X 10-4 M Therefore, Ksp = s (2s)2 = 4s3 Substituting the value of s, we get Ksp = 1.09 X 10-11
One mole of calcium phosphide on reaction with excess of water gives what?
Calcium hydroxide and Phosphine gas
Reaction of magnesium with oxygen?
Magnesium is a reactive metal in groupe two of the periodic table and reacts with oxygen gas in group six to produce Magnesium Oxide. The reaction is as follows: 2Mg + O2 gives 2MgO
