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Concept explainers
(a)
Interpretation:
Formula of sodium selenide has to be written.
Concept Introduction:
Naming of ionic compounds that contain monoatomic ions are given by using the name of the cation (mostly metal), which is followed by the name of anion. The anion (mostly nonmetal) is named by adding the suffix “-ide”. When an ionic compound is made up of only two elements, it is known as binary compounds. In case of binary compounds, the numerical prefixes are not shown in the name because the number of ions is inferred from the empirical formula.
In order to obtain the formula from the given name, the cation and anion are identified first. Then the symbol of the cations and anions are written using the charge. Number of subscripts are added either to cation or anion in order to balance the charge.
(b)
Interpretation:
Formula of nickel(II) bromide has to be written.
Concept Introduction:
Refer part (a).
(c)
Interpretation:
Formula of dinitrogen pentoxide has to be written.
Concept Introduction:
Two or more nonmetals combine to form molecular compounds. The naming of molecular compound is given by following two rules.
- Element that is present in far left of the periodic table appears in the name first.
- Element that is closer to bottom within any of the group appears in the name first.
Numerical prefixes are used in case of molecular compounds to mention how many times the atom of same elements occurs in the formula. Prefix mono is not used for the first element while for the second element it is used.
From the name of molecular compound, the molecular formula can be obtained by considering the name of the first element and second element along with the prefix. The prefix represents the number of atoms of same element is present in the molecular formula. This prefix is entered in subscript in molecular formula after the
(d)
Interpretation:
Formula of copper(II) sulfate has to be written.
Concept Introduction:
Refer part (a).
(e)
Interpretation:
Formula of ammonium sulfite has to be written.
Concept Introduction:
Refer part (c).
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Chapter 2 Solutions
Chemistry: Principles and Practice
- Classify each pair of molecules according to whether or not they can participate in hydrogen bonding with one another. Participate in hydrogen bonding CH3COCH3 and CH3COCH2CH3 H2O and (CH3CH2)2CO CH3COCH3 and CH₂ CHO Answer Bank Do not participate in hydrogen bonding CH3CH2OH and HCHO CH3COCH2CH3 and CH3OHarrow_forwardNonearrow_forwardQ4: Comparing (3S,4S)-3,4-dimethylhexane and (3R,4S)-3,4-dimethylhexane, which one is optically active? Briefly explain.arrow_forward
- Nonearrow_forwardNonearrow_forwardGiven the standard enthalpies of formation for the following substances, determine the reaction enthalpy for the following reaction. 4A (g) + 2B (g) → 2C (g) + 7D (g) AHrxn =?kJ Substance AH in kJ/mol A (g) - 20.42 B (g) + 32.18 C (g) - 72.51 D (g) - 17.87arrow_forward
- Determine ASran for Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(aq) given the following information: Standard Entropy Values of Various Substance Substance So (J/mol • K) 60.9 Zn(s) HCl(aq) 56.5 130.58 H2(g) Zn2+(aq) -106.5 55.10 CI (aq)arrow_forward3) Catalytic hydrogenation of the compound below produced the expected product. However, a byproduct with molecular formula C10H12O is also formed in small quantities. What is the by product?arrow_forwardWhat is the ΔHorxn of the reaction? NaOH(aq) + HCl(aq) → H2O(l) + NaCl(aq) ΔHorxn 1= ________ kJ/molarrow_forward
- = +92kJ ΔΗ = +170kJ Use the following reactions: 2NH3(9) N2(g) + 3H2(g) → 11/N2(g) + 2H2O (1) → NO2(g) + 2H2(g) Determine the DH° of this reaction: NO2(g) + H2(g) → 2(g) → 2H2O(l) + NH3(9) ΔΗarrow_forwardDetermine the entropy change for the reaction SO2(g) + O2(g) following information: Standard Entropy Values of Various Substance Substance SO2(g) 02(g) SO3(g) So (J/mol K) 248.2 205.0 256.8 → SO3(g) given thearrow_forwardIndicate which one of the following reactions most certainly results in a negative AS sys. O1402(g) + 3NH4NO3 (s) + C10 H22(1) → 3N2(g) + 17H2O(g) + 10CO2(g) ○ CO2(aq) = CO2(g) ○ H₂O(g) = H₂O(s) CaCO3(g) = CaO(s) + CO2(g) O CuSO4.5H2O(s) = CuSO4(s) + 5H2O(g)arrow_forward
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning
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