Mg(s)+2H2O(l)→Mg(OH)2(s)+H2(g).Calculate the number of grams of Mg needed for this reaction to release enough energy to...

Mg(s)+2H2O(l)→Mg(OH)2(s)+H2(g).Calculate the number of grams of Mg needed for this reaction to release enough energy to increase the temperature of 75 mL of water from 21 ∘C to 76 ∘C. Calculate the standard enthalpy change for this reaction.

Expert Solution

queen_honey_blossom answered 1 year ago

Calculate ΔH°R for the reaction Mg(s) + 2H2O(l) → Mg(OH)2(s)+H2(g) at 350. K. Assume Cp,m does...

Calculate ΔH°R for the reaction Mg(s) + 2H2O(l) → Mg(OH)2(s)+H2(g) at 350. K. Assume Cp,m does not change with Temperature. How much did ΔH°R change from 298.15K to 350. K?

For the reaction Ca(OH)2(s)+2HCl(aq)→CaCl2(aq)+2H2O(l) a) How many grams of Ca(OH)2 are required to react completely with...

For the reaction Ca(OH)2(s)+2HCl(aq)→CaCl2(aq)+2H2O(l) a) How many grams of Ca(OH)2 are required to react completely with 430 mL of 0.450 M HCl? b) How many kilograms of Ca(OH)2 are required to react with 333 L of a HCl solution that is 24.28% HCl by mass, and has a density of 1.12g/mL?

Use tabulated electrode potentials to calculate ΔG∘ for the reaction 2K(s)+2H2O(l)→H2(g)+2OH−(aq)+2K+(aq)

Sodium and water react according to the reaction 2Na(s) + 2H2O(l) ® 2NaOH(aq) + H2(g) What...

Sodium and water react according to the reaction 2Na(s) + 2H2O(l) ® 2NaOH(aq) + H2(g) What number of moles of H2 will be produced when 4 mol Na is added to 2 mol H2O? a 1 mol b 2 mol c 3 mol d 4 mol e none of these Determine the limiting reactant when 4.00 mol of Sb are reacted with 5.00 mol Cl2 according to the unbalanced equation Sb + Cl2 ® SbCl3 a Sb b...

Calculate Kc for the following reaction: 2CH3OH(g) + H2(g) ⇌ C2H6(g) + 2H2O(g) given the following...

Calculate Kc for the following reaction: 2CH3OH(g) + H2(g) ⇌ C2H6(g) + 2H2O(g) given the following data: 2CH4(g) ⇌ C2H6(g) + H2(g) ;Kc1 = 9.4×10−13 CH4(g) + H2O(g) ⇌ CH3OH(g) + H2(g) ;Kc2 = 2.4 ×10−21 If needed, use “E” for scientific notation. Report your answer to the correct number of significant figures.

Use tabulated electrode potentials to calculate ΔG∘ for the reaction. 2K(s)+2H2O(l)→H2(g)+2OH−(aq)+2K+(aq) Express your answer to three...

Use tabulated electrode potentials to calculate ΔG∘ for the reaction. 2K(s)+2H2O(l)→H2(g)+2OH−(aq)+2K+(aq) Express your answer to three significant figures and include the appropriate units. ΔG∘ = nothing nothing Request Answer Part B Is the reaction spontaneous? Is the reaction spontaneous? no yes

The reaction is: Mg(s) + 2HCl(aq) --> MgCl2 (aq) + H2(g) 1. If 2.016 g of...

The reaction is: Mg(s) + 2HCl(aq) --> MgCl2 (aq) + H2(g) 1. If 2.016 g of hydrogen (H2) was released, how many moles of magnesium reacted? How many grams of magnesium would this be? 2. How many moles of magnesium would replace one mole of hydrogen (H) in the hydrochloric acid? How many grams? (This is the equivalent weight) 3. Compare the mass calculated above in question 2 to your experimental equivalent weight and calculate the percent difference. What would...

1. Determine ΔGo for the following reaction: 2 Na(s) + 2 H2O(l) --> H2(g) + 2...

1. Determine ΔGo for the following reaction: 2 Na(s) + 2 H2O(l) --> H2(g) + 2 OH-(aq) + 2 Na+(aq) 2. Calculate K for the oxidation of iron by H+: 2 Fe(s) + 6 H+(aq) --> 2 Fe3+(aq) + 3 H2(g)

How many grams of Mg(OH)2 will be needed to neutralize 25mL of stomach acid if stomach...

How many grams of Mg(OH)2 will be needed to neutralize 25mL of stomach acid if stomach acid is .10M HCL? How many mL of a .10 M NaOH solution are needed to neutralize 15mL of 0.20 M H3PO4 solution?

The solubility of Mg(OH)2 in water is approximately 9 mg/L. (a) Calculate the Ksp of magnesium...

The solubility of Mg(OH)2 in water is approximately 9 mg/L. (a) Calculate the Ksp of magnesium hydroxide. (b) Calculate the hydroxide concentration needed to precipitate Mg2+ ions such that no more than 5.0 μg/L Mg2+ remains in solution. (c) Calculate the maximum concentration of Mg2+ (as M) that can exist in a solution of pH = 12.

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