Recent questions in Chemical reactions

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Calculate the ΔHrxn for the combustion of methane gas (CH4) if the enthalpies of formation for methane, carbon dioxide, and water are -74.8, -393.5, and -285.8 kJ/mol respectively, using Hess's Law.

asked Feb 3 in Chemical reactions by ArlenBieber1 (1.9k points)

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Calculate the volume of 0.2 M hydrochloric acid required to completely neutralize 25 mL of 0.1 M sodium hydroxide solution.

asked Feb 3 in Chemical reactions by EloiseLoxton (1.7k points)

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Calculate the standard enthalpy change of the reaction of 2 moles of carbon monoxide and 1 mole of oxygen gas to form 2 moles of carbon dioxide gas, given that the enthalpy change for the decomposition of 2 moles of carbon dioxide to 2 moles of carbon monoxide and 1 mole of oxygen gas is -566 kJ/mol, and the enthalpy change for the combustion of 1 mole of carbon to form carbon dioxide gas is -394 kJ/mol. Use Hess's Law to solve the problem.

asked Feb 3 in Chemical reactions by DanClay0864 (2.1k points)

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1 answer 139 views

Calculate the pH of a solution with a concentration of 0.01 M HCl.

asked Feb 3 in Chemical reactions by AHIKayleigh (2.3k points)

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1 answer 120 views

Calculate the pH of a buffer solution that contains 0.2 moles of acetic acid (CH3COOH) and 0.1 moles of sodium acetate (NaCH3COO) dissolved in one liter of solution. The dissociation constant of acetic acid is 1.8 x 10^-5.

asked Feb 3 in Chemical reactions by EdytheEwk100 (2.6k points)

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1 answer 95 views

Calculate the pH of a buffer solution made by combining equal volumes of 0.1 M acetic acid and 0.1 M sodium acetate. The dissociation constant of acetic acid is 1.8 × 10^-5.

asked Feb 3 in Chemical reactions by LuzMccrary7 (2.5k points)

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1 answer 128 views

Calculate the pH of a buffer solution consisting of 0.1 M acetic acid and 0.1 M sodium acetate, given that the dissociation constant (Ka) of acetic acid is 1.8x10^-5.

asked Feb 3 in Chemical reactions by TwylaArledge (1.6k points)

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1 answer 131 views

Calculate the pH of a 0.2 M solution of acetic acid (Ka = 1.8 x 10^-5) at 25°C.

asked Feb 3 in Chemical reactions by Lizzie32E683 (1.8k points)

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1 answer 127 views

Calculate the pH of a 0.2 M solution of acetic acid (CH3COOH) if the acid dissociation constant (Ka) of acetic acid is 1.8 × 10^-5.

asked Feb 3 in Chemical reactions by Beatris09Q13 (1.9k points)

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1 answer 128 views

Calculate the pH of a 0.1 M solution of hydrochloric acid assuming complete dissociation. The acid dissociation constant (Ka) for HCl is 1.3 × 10^-6 at 25°C.

asked Feb 3 in Chemical reactions by LeeAlder0448 (1.5k points)

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1 answer 124 views

Calculate the pH of a 0.1 M solution of acetic acid with a dissociation constant (Ka) of 1.8 x 10^-5.

asked Feb 3 in Chemical reactions by JaneAlbrecht (1.9k points)

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1 answer 141 views

Calculate the pH of a 0.1 M solution of acetic acid (Ka = 1.8 x 10^-5).

asked Feb 3 in Chemical reactions by MorrisMcGahe (1.7k points)

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1 answer 124 views

Calculate the pH of a 0.1 M solution of acetic acid (CH3COOH) given that its dissociation constant Ka is 1.8x10^-5.

asked Feb 3 in Chemical reactions by LorenaReinha (1.8k points)

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1 answer 129 views

What is the oxidation state of nitrogen in NH4NO3?

asked Jan 31 in Chemical reactions by ElyseY075419 (1.7k points)

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1 answer 121 views

When a reaction is at equilibrium and the pressure is increased, which direction (forward or reverse) will be favored according to Le Chatelier's principle? Explain your answer using the concepts of rate of collisions and equilibrium position.

asked Jan 30 in Chemical reactions by EvaO88610769 (2.1k points)

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1 answer 127 views

What will happen to the equilibrium of the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g) if we add more nitrogen gas to the system? Use Le Chatelier's principle to predict the direction of shift and explain your answer.

asked Jan 30 in Chemical reactions by CarmellaBibl (2.0k points)

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1 answer 188 views

What is the effect on the equilibrium position of the H2 + I2 ⇋ 2HI reaction if hydrogen gas is added to the system at constant temperature and pressure, according to Le Chatelier's principle?

asked Jan 30 in Chemical reactions by JacquelynDos (1.7k points)

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1 answer 119 views

How will the double replacement reaction between potassium chloride and silver nitrate, when mixed together, result in the formation of a precipitate?

asked Jan 30 in Chemical reactions by SimonMcWilli (1.9k points)

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1 answer 78 views

Consider the following reaction: 2 SO2(g) + O2(g) ⇌ 2SO3(g) ΔH = -198 kJ/mol What will be the effect on the equilibrium concentration of SO3 if:a) The pressure of the system is increased?b) The concentration of SO2 is increased?c) A catalyst is added to the system?

asked Jan 30 in Chemical reactions by XGJSidney76 (1.4k points)

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1 answer 75 views

Calculate the mass of sodium chloride (NaCl) produced when 2.5 moles of sodium (Na) react completely with excess chlorine gas (Cl2). (Hint: Use the balanced chemical equation 2Na + Cl2 → 2NaCl)

asked Jan 23 in Chemical reactions by FranY1408156 (2.2k points)

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