Concept explainers
(a)
Interpretation:
The formula of a compound formed with hydrogen and sulfur needs to be determined.
Concept introduction:
All the elements in the periodic table can be classified as metals, non-metals and metalloids. Metals are electropositive elements which mainly form basic oxides and non-metals are electronegative elements, they mainly form acidic oxides. Non-metals are placed at the right side of the periodic table and their oxides react with water to form acidic solutions. Hydrogen is a unique element which can react with metal as well as non-metals. It forms hydride with metals and different acidic compounds with non-metals.
(b)
Interpretation:
The formula of a compound formed with hydrogen and nitrogen needs to be determined. The compound so formed must be liquid at 1 atm and
Concept introduction:
All the elements in the periodic table can be classified as metals, non-metals and metalloids. Metals are electropositive elements which mainly form basic oxides and non-metals are electronegative elements, they mainly form acidic oxides. Non-metals are placed at the right side of the periodic table and their oxides react with water to form acidic solutions. Hydrogen is a unique element which can react with metal as well as non-metals. It forms hydride with metals and different acidic compounds with non-metals.
(c)
Interpretation:
The formula of a compound formed with hydrogen and phosphorus needs to be determined. The compound so formed must be a poisonous gas at 1 atm and
Concept introduction:
All the elements in the periodic table can be classified as metals, non-metals and metalloids. Metals are electropositive elements which mainly form basic oxides and non-metals are electronegative elements, they mainly form acidic oxides. Non-metals are placed at the right side of the periodic table and their oxides react with water to form acidic solutions. Hydrogen is a unique element which can react with metal as well as non-metals. It forms hydride with metals and different acidic compounds with non-metals.
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Chapter 21 Solutions
Chemistry: Principles and Reactions
- When 25 g of lead (II) nitrate, Pb(NO3)2, is mixed with 15 g of sodium iodide in water, a reaction occurs and this produces sodium nitrate and solid lead (II) iodide. (a) Write a balanced equation for the reaction. (b) Calculate the theoretical amount of lead (II) iodide produced.arrow_forwardWrite the balanced chemical equation for the reaction of these pairs of reactants: (a) Calcium and bromine (b) Aluminum and oxygenarrow_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
- Most abundant metal on the surface of the earth:(a) Iron(b) Aluminium(c) Calcium(d) Sodiumarrow_forward1) 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 the empirical formula of the compound formed by (a) Al3+ and Cl - ions, (b) Al 3+ and O2 - ions, (c) Mg2+ and NO3 ions.arrow_forward
- Write a balanced chemical equation for each reaction.(a) the reaction between potassium metal and bromine gas(b) the reaction between rubidium metal and liquid water(c) the reaction between gaseous chlorine and solid iodinearrow_forwardWhich is correct and which is incorrect from the following sentences? Proposition True False (a) The nitrogen ions N + and oxygen O + are products of the decay of the corresponding molecules under the influence of sunlight near the earth's surface. (b) Red phosphorus is more active than white phosphorus and is therefore used in the manufacture of matches. (c) The oxidation number (a.o.) of nitrogen in all chemicals NO, NO + and NO- is +2. (d) Of the elements Al, Cl2, Na, Mg and Ca, only Na reacts with cold water to produce H2. (e) Of the two common carbon oxides, monoxide is less acidic.arrow_forwardChlorine reacts with oxygen to form Cl2O7. (a) What is the name of this product (see Table 2.6)? (b) Write a balanced equation for the formation of Cl2O7(l) from the elements. (c) Under usual conditions, Cl2O7 is a colorless liquid with a boiling point of 81℃. Is this boiling point expected or surprising? (d) Would you expect Cl2O7 to be more reactive toward H+(aq) or OH− (aq)? Explain. (e) If the oxygen in Cl2O7 is considered to have the -2 oxidation state, what is the oxidation state of the Cl? What is the electron configuration of Cl in this oxidation state?arrow_forward
- Hydrazine 1N2H42 and dinitrogen tetroxide 1N2O42 form a self-igniting mixture that has been used as a rocket propellant. The reaction products are N2 and H2O. (a) Write a balanced chemical equation for this reaction.arrow_forwardWrite a formula for the compound that forms from calciumand(a) hydroxide (b) carbonate(c) phosphate (d) hydrogen phosphatearrow_forwardAmmonium dihydrogen phosphate, formed from thereaction of phosphoric acid with ammonia, is used as a cropfertilizer as well as a component of some fire extinguishers. (a) What are the mass percentages of N and P in the com-pound? (b) How much ammonia is incorporated into 100. g ofcompound?arrow_forward
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning