Mar 7, 2014 · $$\ce{2H3O+ + Mg -> Mg^{2+} + H2O + H2}$$ This, in an experiment to determine the rate of the reaction, measuring the $\ce{H2}$ produced would measure this mechanism, because it is the step in which hydrogen gas is evolved.

Jan 10, 2016 · Since H is an intermediate, you can substitute for this intermediate from earlier steps and you will end up with Rate = (k3.k1.k2.[Mg][H+]^2)/[Mg2+] and if [Mg]/[Mg2+] is constant as the reaction of a solid always happens at the surface, you can get a rate law = k [HCl]^2

Nov 23, 2016 · I am reacting different masses of Magnesium with hydrochloric acid to find the temperature change. I need 2 explanations: First of all why is the reaction exothermic? Secondly, why does the differe...

Mar 26, 2007 · Right so, increasing the concentration of the HCl (aq) solution will increase the H+ ions available..:S But my main query is.. Does the HCl split up to form H+ and Cl- ions which then react with the Mg to form MgCl2, if so what causes this separation to occur.. Is it simply becuase 'Mg wants two electrons' or something else..

Feb 12, 2013 · Mg(s) + 2HC(aq) → H2(g) + MgCl2(aq) MgO(s) + 2HCl(aq) → H2O(l) + MgCl2(aq) m(Mg) = 0.5 g m(MgO) = 1.0 g V(HCl) = 100.0 mL C(HCl) = 1.0 mol/L T(HCl) = 19° C T(rxn1) = 38° C T(rxn2) = 25° C rxn1 relates to Mg(s) + 2HCl(aq) rxn2 relates to MgO(s) + 2HCl(aq)2. Homework Equations n(Mg) = m/M q = mcΔT ΔH(C) = -q/n 3. The Attempt at a ...

$\pu{-44.4 kJ}$ is the value calculated based on the moles of Mg reacted. However, I suspect that the given answer is wrong because the balanced equation does not yield a 1:1 reaction ratio between $\ce{Mg}$ and $\ce{HCl}$, which means that $\ce{HCl}$ is the limiting reactant, which would make the Heat of Reaction Larger.

Oct 7, 2009 · I did an experiment today, I put some magnesium in HCl solution (pH of around 1 or so) , but for some reason the pH decreased (turned more acidic), and my teacher said that's expected but didn't tell me why it happens. Enlighten me, please.

Sep 22, 2016 · "Mg"_ ((s)) + 2"HCl"_ ((aq)) -> "MgCl"_ (2(aq)) + "H"_ (2(g)) uarr Magnesium, "Mg", will react with hydrochloric acid, "HCl", to produce aqueous magnesium chloride ...

Mar 4, 2022 · When I increase the temperature of HCl, the time it took for Mg to dissolve in HCl became longer. I put 0.1g of Mg into 50ml of HCl and repeat that 4 times. I heat the HCl to 20, 40, 60, and 80 degrees Celsius in 4 separate beakers. Then, I put 0.1g of Mg into it, and the time it took to dissolve completely was 22, 25, 29 and 29 seconds.

Feb 22, 2010 · I have to do a lab investigating factors that affect the rate of reaction between Mg(s) and HCl(aq). I decided to change the concentration of HCl. I timed how long it took for the Mg to completely disappear when the HCl was in excess and the amount of Mg used is constant. Obviously the higher...