Concept explainers
(a)
Interpretation:
The chemical equation for the reaction of chlorine gas with cold sodium hydroxide should be determined.
Concept introduction:
A chemical equation refers to the symbolic representation of a given
(b)
Interpretation:
The chemical equation for the reaction in which sodium iodide reacts with hot and concentrated solution of sulfuric acid should be determined.
Concept introduction:
A chemical equation refers to the symbolic representation of a given chemical reaction in the form of formulae and symbols where the product entities are present on the right hand side of the chemical equation while the reactant entities are present on the left hand side of the chemical equation.
(c)
Interpretation:
The chemical equation for the reaction where chlorine gas reacts with potassium triiodide solution should be determined.
Concept introduction:
A chemical equation refers to the symbolic representation of a given chemical reaction in the form of formulae and symbols where the product entities are present on the right hand side of the chemical equation while the reactant entities are present on the left hand side of the chemical equation.
(d)
Interpretation:
The chemical equation for the reaction in which sodium bromide reacts with hot aqueous solution of phosphoric acid should be determined.
Concept introduction:
A chemical equation refers to the symbolic representation of a given chemical reaction in the form of formulae and symbols where the product entities are present on the right hand side of the chemical equation while the reactant entities are present on the left hand side of the chemical equation.
(e)
Interpretation:
The chemical equation for the reaction of NaHSO3 with MnO4- (aq) in dilute sulfuric acid should be determined.
Concept introduction:
A chemical equation refers to the symbolic representation of a given chemical reaction in the form of formulae and symbols where the product entities are present on the righthand side of the chemical equation while the reactant entities are present on the left hand side of the chemical equation.
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GENERAL CHEMISTRY-MOD.MASTERINGCHEM.
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- What volume of 0.250 M H2SO4 solution is required to neutralize a solution that contains 5.00 g of CaCO3?arrow_forwardWhen 85.0 mL of 0.250 M Ba(OH)2 solution is added to 85.00 mL of 0.250 M Al (NO3)3 solution, a white gelatinous precipitate of Al(OH)3; is formed. Assuming 100% yield, (a) what mass (in grams) of Al(OH)3 is formed? (b) what is the molarity of each of the ions Ba2+, OH-, Al3+, NO3- in the resulting solution?arrow_forwardChlorine gas was first prepared in 1774 by C. W. Scheele by oxidizing sodium chloride with manganese(IV) oxide. The reaction is NaCl(aq)+H2SO4(aq)+MnO2(s)Na2SO4(aq)+MnCl2(aq)+H2O(l)+Cl2(g) Balance this equation.arrow_forward
- What volume of 0.200 M NaOH is necessary to neutralize the solution produced by dissolving 2.00 g of PCl3 is an excess of water? Note that when H3PO3 i5 titrated under these conditions, only one proton of the acid molecule reacts.arrow_forwardThe metals industry was a major source of air pollution years ago. One common process involved roasting metal sulfides in the air 2 PbS(s) + 3 O2(g) 2 PbO(s) + 2 SO2(g) If 2.50 mol of PbS is heated in air, what amount of O2 is required for complete reaction? What amounts of PbO and SO2 are expected?arrow_forwardThree reactions very important to the semiconductor industry are The reduction of silicon dioxide to crude silicon, SiO2(s) + 2 C(s) → Si(s) + 2 CO(g) ΔrH° = 689.9 kJ/mol The formation of silicon tetrachloride from crude silicon, Si(s) + 2 Cl2(g) → SiCl4(g) ΔrH° = −657.01 kJ/mol The reduction of silicon tetrachloride to pure silicon with magnesium, SiCl4(g) + 2 Mg(s) → 2 MgCl2(s) + Si(s) ΔrH° = −625.6 kJ/mol Calculate the overall enthalpy change when 1.00 mol sand, SiO2, changes into very pure silicon by this series of reactions.arrow_forward
- Silver ions can be found in some of the city water piped into homes. The average concentration of silver ions in city water is 0.028 ppm. (a) How many milligrams of silver ions would you ingest daily if you drank eight glasses (eight oz/glass) of city water daily? (b) How many liters of city water are required to recover 1.00 g of silver chemically?arrow_forwardConsider the equation G = -nF. What are the four terms in this equation? Why does a minus sign appear in the equation? What does the superscript o indicate?arrow_forwardA certain grade of steel is made by dissolving 5.0 g of carbon and 1.5 g of nickel per 100. g of molten iron. What is the mass percent of each component in the finished steel?arrow_forward
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