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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Chemistry: Principles and Practice
- Write the balanced chemical equations for the following reactions.(a) Calcium hydroxide + Carbon dioxide Calcium carbonate + Water(b) Zinc + Silver nitrate Zinc nitrate + Silver(c) Aluminum + Copper chloride Aluminum chloride +Copper(d) Barium chloride + Potassium sulphate Barium sulphate + potassium chloridearrow_forwardMost abundant metal on the surface of the earth:(a) Iron(b) Aluminium(c) Calcium(d) Sodiumarrow_forwardwrite a balanced chemical equation for each (A) Iron (III) chloride reacts with sodium hydroxide to produce iron (III) hydroxide and sodium chloride. (B) Magnesium nitrite reacts with perchloric acid to produce magnesium perchlorate and nitrous acid. (C) Copper(II) hydroxide reacts with hydrosulfuric acid to produce copper (II) sulfide and water.arrow_forward
- 1) A sample of blue crystals of copper (II) sulfate pentahydrate was heated to produce the copper(Il)sulfate tetrahydrate. (a) Write the chemical formulas of the copper(II)sulfate pentahydrate and copper(II)sulfate tetrahydrate. (b) Calculate mass percent of water in copper(II)sulfate pentahydrate (c) If 7.491 g of the copper (II) sulfate pentahydrate produces 6.951 g of the copper (II) sulfate tetrahydrate, how many grams of anhydrous copper(I1)sulfate could be obtained? (Cu=63.5 g/mol, S=32.0 g/mol, O=16.0 g/mol, H=1 g/mol)arrow_forwardWrite a chemical equation for each of the following chemical reactions: (a) Mercury liquid and fluorine gas react to give solid mercury(II) fluoride. (b) Zinc metal reacts with sulfuric acid to give aqueous zinc sulfate and hydrogen gas.arrow_forwardWhen each of the following pairs of aqueous solutions is mixed, does a precipitation reaction occur? If so, write the formula and name of the precipitate. (Type your answer using the format CO2 for CO₂. Type NONE in the blanks if there is no precipitation reaction.) (a) iron(III) bromide + potassium phosphate formula name (b) ammonium sulfate + iron(II) nitrate formula namearrow_forward
- Give the formulas for the following ionic compoundsarrow_forwardA 0.500 g sample of tin foil reacted with oxygen to give 0.635 g of product. (a) What is the empirical formula of the tin oxide? (b) What is the percent by mass of tin and the percent by mass of oxygen in the sample?arrow_forwardRead each of the following statements very carefully. Then decide if the statement is CORRECT or WRONG. If the statement is WRONG, EXPLAIN why you think the statement is WRONG. (a) When the fire alarm rings continuously, leave the building and go to wait at an assembly point (b) Br has 45 neutrons (c) The molecular formula of sodium chloride is NaCl (d) The empirical formula of oxalic acid is H2C2O4 (e) Ammonium sulfide is a binary ionic compound (f) Gases condense at negative temperature on the Kelvin scale (g) A chemical reaction which produces a poisonous gas must be carried out in the fume hood (h) When your house is on fire you must call the police immediately and give them the location of your house (i) Halogens are reducing agents when they react with alkali metals (i) One of the chemical properties of sugar is its high solubility in waterarrow_forward
- Please help me solve thisarrow_forwardA gaseous binary compound has a vapor density that is 2.53 times that of nitrogen at 100°C and atmospheric pressure. When 8.21 g of the gas reacts with AlCl3 at 100°C, 1.62 g gaseous nitrogen is produced, removing all of the nitrogen originally present.(a) Estimate the molecular mass of the gaseous compound.(b) How many nitrogen atoms are there in a molecule ofthe compound?(c) What is the maximum possible value of the atomicmass of the second element?(d) Are other values possible for the atomic mass of thesecond element? Use a table of atomic masses to identify the element that best fits the data.(e) What is the molecular formula of the compound?arrow_forwardWhich compound of calcium is used for swimming pool water and sewage treatment? (A) Calcium hydroxide, Ca(OH)2 (B) Calcium hypochlorite, Ca(OCl)2 (C) Calcium carbonate, CaCO3 (D) Calcium oxide, CaOarrow_forward
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning