One way to make coal burning better for the environment is to remove carbon dioxide from the exhaust gases released from power plants using a compound containing an amine (-NH2) group. The reaction between carbon dioxide and monoethanolamine is: CO2(g) + 2 HOCH2CH2NH2(aq) -> HOCH2CH2NH3 +(aq) + HOCH2CH2NHCO2-(aq) What mass of monoethanoloamine is required to react with 1.0 kg of carbon dioxide? (LO 3.5) (a) 2.8 kg (b) 1.1 kg (c) 0.93 kg (d) 0.53 kg

검증된 단계별 안내

Identify the balanced chemical equation: CO_2(g) + 2 HOCH_2CH_2NH_2(aq) \(\rightarrow\) HOCH_2CH_2NH_3^+(aq) + HOCH_2CH_2NHCO_2^-(aq).

Determine the molar mass of CO_2 by adding the atomic masses of carbon (C) and oxygen (O).

Calculate the number of moles of CO_2 in 1.0 kg by dividing the mass of CO_2 by its molar mass.

Use the stoichiometry of the reaction to find the moles of monoethanolamine (HOCH_2CH_2NH_2) needed, noting that 2 moles of monoethanolamine react with 1 mole of CO_2.

Calculate the mass of monoethanolamine required by multiplying the moles of monoethanolamine by its molar mass.

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주요 개념

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Stoichiometry

Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced chemical equation. It allows us to determine the proportions of substances involved in a reaction, which is essential for converting between mass and moles. In this question, stoichiometry will help us find the amount of monoethanolamine needed to react with a specific mass of carbon dioxide.

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is crucial for converting between the mass of a substance and the number of moles. To solve the problem, we need to calculate the molar mass of monoethanolamine and carbon dioxide to accurately determine how much monoethanolamine is required for the reaction.

Chemical Reaction Equilibrium

Chemical reaction equilibrium refers to the state in which the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products. Understanding this concept is important in reactions involving gases and solutions, as it can affect the efficiency of carbon dioxide removal in power plants. In this context, it helps to appreciate the dynamics of the reaction between carbon dioxide and monoethanolamine.