Concept explainers
(a)
Interpretation: The given reaction has to be balanced.
Concept Introduction:
Balanced equation:
- It is a chemical equation in which the number of each type of atoms will be equal in the stoichiometric ratios on both the sides of the equation.
- The concept of writing a balanced chemical equation is based on the law of conversion of mass
- According to the law of conversion of mass, in a
chemical reaction the mass of total amount of the product should be equal to the total mass of the reactants. - First write the reaction from the given information.
- Then count the number of atoms of each element in reactants as well as products.
- Insert some positive integers as coefficients of reactants as well as products in order to get the equal number of all elements on both sides of the equation.
(b)
Interpretation: The balanced reduction reaction of the zinc metal with the given complex ion has to be written.
The ionic form of the equation also need to written.
Concept Introduction:
Reduction: It is the reaction in which the electrons are added to a reactant species. So the oxidation number of the reactant decreases as the result of addition of electrons.
Oxidation: It is the reaction in which the electrons are removed from a reactant species. So the oxidation number of the reactant increases as the result of removal of electrons.
Oxidation number: It is the number assigned to a chemical element which indicates the number of electrons lost or gained by an atom of that element.
Reducing agent: The species which undergoes oxidation to reduce another species is known as the reducing agent.
(c)
Interpretation: The geometry and co-ordination number of the given complex ion has to be determined.
Concept Introduction:
Molecular geometry: The term molecular geometry refers to the 3-dimensional shape of the molecule by which the molecule is occupying in space with all its surrounding atoms or ions and/or lone pair of electrons.
Co-ordination number: The number of atoms or ions or molecules that are surrounding the central metal atom or ion in a complex is known as the co-ordination number.
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Chapter 20 Solutions
EBK GENERAL CHEMISTRY: THE ESSENTIAL CO
- personality of each of them in terms of nucleophile vs. electrophile (some can be considered acids/bases but we are not looking at that here). Note you may have to use your growing intuition to figure out the personality of one of the molecules below but I believe in you! Rationalize it out based on what we have called strong versus weak electrophiles in past mechanisms. Consider using the memes below to help guide your understanding! A OH O B CH3 C Molecule A: [Select] Molecule B: [Select] Molecule C: [Select] Molecule D: [Select] > H D OHarrow_forward4) Which oxygen atom in the structure below is most basic / nucleophilic? Please explain by discussing the electron density around each oxygen atom. Show at least three resonance structures for the compound. оогоarrow_forwardCan you show me this problem. Turn them into lewis dot structures for me please and then answer the question because I cant seem to comprehend it/ The diagrams on the picture look too small I guess.arrow_forward
- The fire releases 2.80 x 107 Joules of heat energy for each liter of oil burned. The water starts out at 24.5 °C, raising the water's temperature up to 100 °C, and then raises the temperature of the resulting steam up to 325 °C. How many liters of water will be needed to absorb the heat from the fire in this way, for each 1.0 liter of crude oil burned? 4186 J/(kg°C) = heat of water 2020 J/(kg°C) = heat of steam 2,256,000 (i.e. 2.256 x 106) J/kg = latent heat of vaporization for water (at the boiling point of 100 °C).arrow_forward6 Which of the following are likely to be significant resonance structures of a resonance hybrid? Draw another resonance structure for each of the compounds you select as being a resonance form. (A Br: Br: A B C D Earrow_forwardWrite the systematic (IUPAC) name for the following organic molecules. Note for advanced students: you do not need to include any E or Z prefixes in your names. Br structure Br Br Oweuarrow_forward
- Conservation of mass was discussed in the background. Describe how conservation of mass (actual, not theoretical) could be checked in the experiment performed.arrow_forwardWhat impact would adding twice as much Na2CO3 than required for stoichiometric quantities have on the quantity of product produced? Initial results attachedarrow_forwardGiven that a theoretical yield for isolating Calcium Carbonate in this experiment would be 100%. From that information and based on the results you obtained in this experiment, describe your success in the recovery of calcium carbonate and suggest two possible sources of error that would have caused you to not obtain 100% yield. Results are attached form experimentarrow_forward
- 5) Calculate the flux of oxygen between the ocean and the atmosphere(2 pts), given that: (from Box 5.1, pg. 88 of your text): Temp = 18°C Salinity = 35 ppt Density = 1025 kg/m3 Oxygen concentration measured in bulk water = 263.84 mmol/m3 Wind speed = 7.4 m/s Oxygen is observed to be about 10% initially supersaturated What is flux if the temperature is 10°C ? (2 pts) (Hint: use the same density in your calculations). Why do your calculated values make sense (or not) based on what you know about the relationship between gas solubility and temperature (1 pt)?arrow_forwardFind a molecular formula for these unknownsarrow_forward(ME EX2) Prblms 8-11 Can you please explain problems 8 -11 to me in detail, step by step? Thank you so much! If needed color code them for me.arrow_forward
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