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Ch.14 - Chemical Kinetics
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.14 - Chemical Kinetics문제 22b
14장, 문제 22b

The rate of disappearance of HCl was measured for the following reaction: CH3OH1aq2 + HCl1aq2¡CH3Cl1aq2 + H2O1l2 The following data were collected: Time (min) 3HCl 4 1M2 0.0 1.85 54.0 1.58 107.0 1.36 215.0 1.02 430.0 0.580 (b) Calculate the average rate of reaction for the entire time for the data from t = 0.0 min to t = 430.0 min.

검증된 단계별 안내
1
Identify the initial and final concentrations of HCl from the data provided. At t = 0.0 min, the concentration of HCl is 1.85 M, and at t = 430.0 min, the concentration is 0.580 M.
Calculate the change in concentration of HCl (\(\Delta [HCl]\)) by subtracting the final concentration at t = 430.0 min from the initial concentration at t = 0.0 min.
Identify the total time over which the reaction occurs, which is from t = 0.0 min to t = 430.0 min. Calculate the change in time (\(\Delta t\)) by subtracting the initial time from the final time.
Calculate the average rate of reaction using the formula: \(\text{Average Rate} = \frac{\Delta [HCl]}{\Delta t}\). Remember that the rate of disappearance of HCl is negative, so take the absolute value if necessary to express the rate as a positive number.
Express the average rate in appropriate units, which in this case would be M/min (molarity per minute).

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Reaction Rate

The reaction rate is a measure of how quickly reactants are converted into products in a chemical reaction. It can be expressed as the change in concentration of a reactant or product over time. In this case, the rate of disappearance of HCl is crucial for understanding the overall reaction kinetics.
추천 영상:
가이드 코스
02:03
Average Rate of Reaction

Average Rate of Reaction

The average rate of reaction is calculated by taking the total change in concentration of a reactant or product over a specified time interval. It provides a simplified view of the reaction's speed across that period, which is essential for analyzing the data collected from the experiment.
추천 영상:
가이드 코스
02:03
Average Rate of Reaction

Concentration Units

Concentration is typically expressed in molarity (M), which is moles of solute per liter of solution. Understanding how to interpret and manipulate these units is vital for calculating rates and determining how the concentration of HCl changes over time in the given reaction.
추천 영상:
가이드 코스
02:13
SI Units
관련 실천
교과서 질문

The rate of disappearance of HCl was measured for the following reaction: CH3OH1aq2 + HCl1aq2¡CH3Cl1aq2 + H2O1l2 The following data were collected: Time (min) 3HCl 4 1M2 0.0 1.85 54.0 1.58 107.0 1.36 215.0 1.02 430.0 0.580 (d) Graph [HCl] versus time and determine the instantaneous rates in M>min and M>s at t = 75.0 min and t = 250 min.

871
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교과서 질문

For each of the following gas-phase reactions, indicate how the rate of disappearance of each reactant is related to the rate of appearance of each product:

(a) H2O2(g) → H2(g) + O2(g)

(b) 2 N2O(g) → 2 N2(g) + O2(g)

110
views
교과서 질문

The rate of disappearance of HCl was measured for the following reaction: CH3OH1aq2 + HCl1aq2¡CH3Cl1aq2 + H2O1l2 The following data were collected: Time (min) 3HCl 4 1M2 0.0 1.85 54.0 1.58 107.0 1.36 215.0 1.02 430.0 0.580 (a) Calculate the average rate of reaction, in M>s, for the time interval between each measurement.

555
views
교과서 질문

The rate of disappearance of HCl was measured for the following reaction: CH3OH1aq2 + HCl1aq2¡CH3Cl1aq2 + H2O1l2 The following data were collected: Time (min) 3HCl 4 1M2 0.0 1.85 54.0 1.58 107.0 1.36 215.0 1.02 430.0 0.580 (c) Which is greater, the average rate between t = 54.0 and t = 215.0 min, or between t = 107.0 and t = 430.0 min?

363
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교과서 질문

The isomerization of methyl isonitrile (CH3NC) to acetonitrile (CH3CN) was studied in the gas phase at 215°C, and the following data were obtained:

Time (s) [CH3NC] (M)

0 0.0165

2000 0.0110

5000 0.00591

8000 0.00314

12,000 0.00137

15,000 0.00074 

(d) Graph [CH3NC] versus time and determine the instantaneous rates in M/s at t = 5000 s and t = 8000 s.

755
views
교과서 질문

The isomerization of methyl isonitrile (CH3NC) to acetonitrile (CH3CN) was studied in the gas phase at 215°C, and the following data were obtained:

Time (s) [CH3NC] (M)

0 0.0165

2000 0.0110

5000 0.00591

8000 0.00314

12,000 0.00137

15,000 0.00074 

(b) Calculate the average rate of reaction over the entire time of the data from t = 0 to t = 15,000 s.

562
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