. Complete the sentences from the reading above with your answers from Q1 (Q1. The following reaction is balanced. Show ALL steps that were involved in balancing this equation: Zn(s) + Hg2+(aq) --> Zn2+(aq) + Hg(s) ) Choose from the following: reduced, oxidised, reducing agent, oxidising agent. The zinc atom (Zn) is to Zn2+ and acts as a(n) . Hg2+ is to Hg and acts as a(n)
. Complete the sentences from the reading above with your answers from Q1 (Q1. The following reaction is balanced. Show ALL steps that were involved in balancing this equation: Zn(s) + Hg2+(aq) --> Zn2+(aq) + Hg(s) ) Choose from the following: reduced, oxidised, reducing agent, oxidising agent. The zinc atom (Zn) is to Zn2+ and acts as a(n) . Hg2+ is to Hg and acts as a(n)
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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Q2. Complete the sentences from the reading above with your answers from Q1 (Q1. The following reaction is balanced. Show ALL steps that were involved in balancing this equation: Zn(s) + Hg2+(aq) --> Zn2+(aq) + Hg(s) )
Choose from the following: reduced, oxidised, reducing agent, oxidising agent.
The zinc atom (Zn) is to Zn2+ and acts as a(n) . Hg2+ is to Hg and acts as a(n) (4).
Transcribed Image Text:Chemical Connections 4C
Artificial Pacemakers and Redox
to Zn, and Hg is[
An artificial pacemaker is a small electrical device that The zine atom is [
uses electrical impulses, delivered by electrodes contacting Hg. Many contemporary artificial pacemakers contain a
the heart muscles, to regulate the beating of the heart. The lithium-iodine battery, which has a longer battery life (10
primary purpose of a pacemaker is to maintain an adequate years or more). Consider the unbalanced redox reaction
heart rate, either because the heart's native pacemaker for the lithium-iodine battery:
does not beat fast enough, or perhaps there is a blockage in
the heart's electrical conduction system. When a pacemaker
detects that the heart is beating too slowly, it sends an elec- The lithium atom is
to
Li + I, Lil
I to Li', and the I, molecule
to I. When the pacemaker fails to sense a
trical signal to the heart, generated via a redox reaction, so
that the heart muscle beats faster. Modern pacemakers are heartbeat within a normal beat-to-beat time period, an
externally programmable and allow a cardiologist to select electrical signal produced from these reactions is initi-
the optimum pacing modes for individual patients.
Early pacemakers generated an electrical impulse via and stimulating activity continues on a beat-by-beat ba-
the following redox reaction:
is
ated, stimulating the ventricle of the heart. This sensing
sis. More complex systems include the ability to stimulate
Zn + Hg* Zn²* + Hg
both the atrial and ventricular chambers.
A pacemaker is a medical device that uses electrical impulses,
delivered by electrodes contacting the heart muscles, to regulate
the beating of the heart.
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