2. Consider the chemical reaction between NaHCO3 and HCI in the experiment, what was the cause of the effervescence ( one of the indicators that the reaction is in progress)? A. Accumulation of excess reactant B. Evolution of heat and light C. Formation of NaCl precipitate D. Formation of CO2 ga

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer the following questions correctly choose the correct answer.

1. Consider the following generic chemical equation: 2A + 5B → C + 3D. If 8 units of A reacts with 20 units of B, which statement is true?

A. Substance A will be the limiting reactant.

B. Substance B will be the limiting reactant.

C. Substance C cannot be formed from this reaction.

D. Substance A and B are of equivalent amount.

2. Consider the chemical reaction between NaHCO3 and HCI in the experiment, what was the cause of the effervescence ( one of the indicators that the reaction is in progress)?

A. Accumulation of excess reactant

B. Evolution of heat and light

C. Formation of NaCl precipitate

D. Formation of CO2 gas

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