The number of moles of H + ions that are present in 1.40 L of 0.25 M perchloric acid is to be calculated. Concept introduction: Acid is a substance that dissociates in water to release H + ions. Depending upon the strength the acids can be classified into two types: 1. Strong acids 2. Weak acids Strong acids are the substance that dissociates completely into its ions when dissolved in the solution. They dissociate completely in water to release H + ions. They behave as strong electrolytes and conduct a large amount of electricity. Weak acids are the substance that does not dissociates completely into its ions when dissolved in the solution. They dissociate partially in water to release H + ions. They behave as weak electrolytes and conduct less amount of electricity.
The number of moles of H + ions that are present in 1.40 L of 0.25 M perchloric acid is to be calculated. Concept introduction: Acid is a substance that dissociates in water to release H + ions. Depending upon the strength the acids can be classified into two types: 1. Strong acids 2. Weak acids Strong acids are the substance that dissociates completely into its ions when dissolved in the solution. They dissociate completely in water to release H + ions. They behave as strong electrolytes and conduct a large amount of electricity. Weak acids are the substance that does not dissociates completely into its ions when dissolved in the solution. They dissociate partially in water to release H + ions. They behave as weak electrolytes and conduct less amount of electricity.
The number of moles of H+ ions that are present in 1.40 L of 0.25M perchloric acid is to be calculated.
Concept introduction:
Acid is a substance that dissociates in water to release H+ ions. Depending upon the strength the acids can be classified into two types:
1. Strong acids
2. Weak acids
Strong acids are the substance that dissociates completely into its ions when dissolved in the solution. They dissociate completely in water to release H+ ions. They behave as strong electrolytes and conduct a large amount of electricity.
Weak acids are the substance that does not dissociates completely into its ions when dissolved in the solution. They dissociate partially in water to release H+ ions. They behave as weak electrolytes and conduct less amount of electricity.
(b)
Interpretation Introduction
Interpretation:
The number of moles of H+ ions that are present in 6.8 mL of 0.92M nitric acid is to be calculated.
Concept introduction:
Acid is a substance that dissociates in water to release H+ ions. Depending upon the strength the acids can be classified into two types:
1. Strong acids
2. Weak acids
Strong acids are the substance that dissociates completely into its ions when dissolved in the solution. They dissociate completely in water to release H+ ions. They behave as strong electrolytes and conduct a large amount of electricity.
Weak acids are the substance that does not dissociates completely into its ions when dissolved in the solution. They dissociate partially in water to release H+ ions. They behave as weak electrolytes and conduct less amount of electricity.
(c)
Interpretation Introduction
Interpretation:
The number of moles of H+ ions that are present in 2.6 L of 0.085M hydrochloric acid is to be calculated.
Concept introduction:
Acid is a substance that dissociates in water to release H+ ions. Depending upon the strength the acids can be classified into two types:
1. Strong acids
2. Weak acids
Strong acids are the substance that dissociates completely into its ions when dissolved in the solution. They dissociate completely in water to release H+ ions. They behave as strong electrolytes and conduct a large amount of electricity.
Weak acids are the substance that does not dissociates completely into its ions when dissolved in the solution. They dissociate partially in water to release H+ ions. They behave as weak electrolytes and conduct less amount of electricity.
Technetium is the first element in the periodic chart that does not have any stable isotopes.
Technetium-99m is an especially interesting and valuable isotope as it emits a gamma ray with a half
life ideally suited for medical tests. It would seem that the decay of technetium should fit the
treatment above with the result In(c/c) = -kt. The table below includes data from the two sites:
http://dailymed.nlm.nih.gov/dailymed/druginfo.cfm?id=7130
http://wiki.medpedia.com/Clinical: Neutrospec_(Technetium_(99m Tc)_fanolesomab).
a.
b.
C.
Graph the fraction (c/c.) on the vertical axis versus the time on the horizontal axis. Also
graph In(c/c.) on the vertical axis versus time on the horizontal axis.
When half of the original amount of starting material has hours fraction remaining
disappeared, c/c = ½ and the equation In(c/c.) = -kt becomes
In(0.5) = -kt1/2 where t₁₂ is the half life (the time for half of the
material to decay away). Determine the slope of your In(c/c.) vs
t graph and…
Please correct answer and don't use hand rating
1.
a) Assuming that an atom of arsenic has hydrogen-like atomic orbitals, sketch the radial
probability plots for 4p and 4d orbitals of S atom. Indicate angular and radial nodes in
these orbitals.
(4 points)
b) Calculate Zeff experienced by and electron in 4p AO's in a arsenic atom. Use Slater rules
that were discussed in lecture.
(3 points)
Chapter 4 Solutions
Chemistry: The Molecular Nature of Matter and Change
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