Recent questions in Chemistry

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1 answer 132 views

Given the reaction between sulfuric acid and sodium hydroxide, predict the chemical equation for the products formed and balance the reaction. Calculate the amount of sulfuric acid needed to neutralize 20 grams of sodium hydroxide.

asked Feb 4 in Inorganic Chemistry by SVNCarissa5 (1.8k points)

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1 answer 134 views

Given the reaction A + B ⇌ C and the equilibrium constant, Kc = 2.0 at a certain temperature, if the initial concentration of A is 0.1 M and the initial concentration of B is 0.2 M, what is the equilibrium concentration of C if the reaction proceeds with a rate constant of 0.05 M/s?

asked Feb 4 in Chemical kinetics by BlairMorrill (1.9k points)

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1 answer 156 views

Given the reactants Copper(II) chloride and Sodium hydroxide, predict the products of the reaction and write the balanced chemical equation.

asked Feb 4 in Inorganic Chemistry by CherylDooley (1.7k points)

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1 answer 164 views

Given the molecular formula of a diatomic molecule (A2), how can we use calculation of molecular orbitals to determine the bond order and predict the bond length?

asked Feb 4 in Quantum Chemistry by MarciaBrooke (1.8k points)

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1 answer 124 views

Given the molecular formula FeCl3, determine the oxidation states of the iron and chlorine atoms in the compound.

asked Feb 4 in Chemical reactions by CassieClopto (2.4k points)

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1 answer 155 views

Given the inorganic compound Mg(ClO)2, predict its stability based on the characteristics of its constituent atoms and molecular geometry.

asked Feb 4 in Inorganic Chemistry by DanaPittmann (1.5k points)

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1 answer 166 views

Given the following unbalanced chemical equation: Fe + HCl → FeCl3 + H2, what is the balanced equation for the reaction and how many moles of hydrogen gas will be formed when 0.25 moles of Fe react with an excess of HCl?

asked Feb 4 in Chemical reactions by AlineBentham (2.1k points)

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1 answer 121 views

Given the following reaction at standard conditions:Cu(s) + 2Ag+(aq) -> Cu2+(aq) + 2Ag(s) Calculate the cell potential, E°cell, at 25°C using the standard reduction potentials:Cu2+(aq) + 2e- -> Cu(s), E°red = +0.34 VAg+(aq) + e- -> Ag(s), E°red = +0.80 V

asked Feb 4 in ElectroChemistry by Phillipp57B1 (2.3k points)

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1 answer 130 views

Given the following information: A polymerization reaction has a heat of reaction of -150 kJ/mol and a Δn (change in moles of gas) of +2 moles gas/mol. If 5.0 g of the monomer is polymerized, what is the enthalpy change (in kJ) for the overall reaction?

asked Feb 4 in ThermoChemistry by ElenaBriscoe (2.1k points)

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1 answer 138 views

Given the following half-reactions:Cu²⁺ (aq) + 2e⁻ → Cu (s) E° = +0.34 VAg⁺ (aq) + e⁻ → Ag (s) E° = +0.80 VWhat is the cell potential for the reaction when a copper electrode is paired with a silver electrode in a standard electrochemical cell?

asked Feb 4 in ElectroChemistry by ElyseY075419 (1.7k points)

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1 answer 83 views

Given the following half-reactions:Cu2+ (aq) + 2 e- -> Cu (s) E° = +0.34 VZn2+ (aq) + 2 e- -> Zn (s) E° = -0.76 VCalculate the equilibrium constant (K) for the reaction: Cu2+ (aq) + Zn (s) -> Zn2+ (aq) + Cu (s)

asked Feb 4 in ElectroChemistry by AndreasLdp14 (1.7k points)

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1 answer 176 views

Given the following equilibrium reaction: Fe3+(aq) + 4CN-(aq) <--> Fe(CN)64-(aq)If the equilibrium constant, Kc, is equal to 1.2 x 10^10 at 25°C, what will be the value of Kc at 50°C? And how will the equilibrium position shift when the temperature is changed from 25°C to 50°C?

asked Feb 4 in Chemical equilibrium by TonyaCombs22 (1.8k points)

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1 answer 124 views

Given the following equations and their respective enthalpy changes:1) 2H2 (g) + O2 (g) → 2H2O (l) ΔH = -484 kJ/mol 2) C2H5OH (l) + 3O2 (g) → 2CO2 (g) + 3H2O (l) ΔH = -1,367 kJ/mol 3) C2H5OH (l) → C2H4 (g) + H2O (g) ΔH = +44 kJ/mol Using Hess’s Law, determine the ΔH for the following reaction: C2H5OH (l) → 2CO2 (g) + 3H2 (g)

asked Feb 4 in Chemical reactions by JordanHering (2.2k points)

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1 answer 135 views

Given the following electrochemical reaction: Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s)Calculate the cell potential at standard conditions (298 K, 1 atm, 1 M concentrations).

asked Feb 4 in ElectroChemistry by ChasityBelli (2.2k points)

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1 answer 113 views

Given the following electrochemical equation:Cu(s) | Cu²⁺(aq, 0.0100 M) || Cr³⁺(aq, 1.00 M) | Cr(s)At 298 K, the standard reduction potential for Cu²⁺/Cu is +0.34 V and for Cr³⁺/Cr is -0.74 V. Calculate the equilibrium constant (K) for the above electrochemical reaction.

asked Feb 4 in ElectroChemistry by AlfonsoJanze (1.9k points)

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1 answer 126 views

Given the following data for the electrochemical reaction A + B → C, where A and B are electrons:- The anodic Tafel slope is 50 mV per decade of current density.- The cathodic Tafel slope is 70 mV per decade of current density.Calculate the exchange current density (i0) for the reaction.

asked Feb 4 in ElectroChemistry by CarltonWoote (1.7k points)

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1 answer 85 views

Given the equilibrium reaction: 2NOCl(g) ⇌ 2NO(g) + Cl2(g), if the equilibrium constant (Kc) at 25°C is 2.45 x 10^-3, what will be the new value of Kc if the temperature is increased to 50°C?

asked Feb 4 in Chemical equilibrium by MaeBuchanan (1.7k points)

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1 answer 186 views

Given the equilibrium equation N2(g) + 3H2(g) ⇌ 2NH3(g), if the concentration of N2 is increased by 0.2 M while the temperature is held constant, what will be the effect on the equilibrium concentration of NH3?

asked Feb 4 in Chemical equilibrium by EttaRide758 (1.3k points)

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1 answer 116 views

Given the enthalpy of solution of sodium hydroxide (NaOH) is -44.5 kJ/mol and the enthalpy of solution of hydrochloric acid (HCl) is -74.8 kJ/mol, calculate the enthalpy change for the precipitation reaction between NaOH and HCl, assuming all solutions are at a concentration of 1 M.

asked Feb 4 in ThermoChemistry by KatherinKely (1.8k points)

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1 answer 124 views

Given the electrochemical reaction Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s), calculate the standard cell potential at 25°C if the standard reduction potentials are E°(Cu2+/Cu) = 0.34 V and E°(Zn2+/Zn) = -0.76 V.

asked Feb 4 in ElectroChemistry by HIELucille73 (2.1k points)

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