Concept explainers
(a)
Interpretation:
The molarity of the nitric acid solution.
(a)
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Explanation of Solution
The number of moles is calculated from the following expression:
Here,
The conversion of volume from milliliters to liters is given as follows:
The molarity of the solution is determined by the following expression:
Here,
The molar mass of nitric acid is
Substitute
Substitute
Substitute
Therefore, the molarity of
(b)
Interpretation:
The molarity of the sulfuric acid solution.
(b)
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Explanation of Solution
The molar mass of sulfuric acid is
Substitute
Substitute
Substitute
Therefore, the molarity of
(c)
Interpretation:
The molarity of potassium hydroxide solution.
(c)
![Check Mark](/static/check-mark.png)
Explanation of Solution
The molar mass of potassium hydroxide is
Substitute
Substitute
Substitute
Therefore, the molarity of
(d)
Interpretation:
The molarity of calcium hydroxide solution.
(d)
![Check Mark](/static/check-mark.png)
Explanation of Solution
The molar mass of calcium hydroxide is
Substitute
Substitute
Substitute
Therefore, the molarity of
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Chapter 4 Solutions
INTRO TO CHEMISTRY EBK ACCESS CARD >I<
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- When organic compounds containing sulfur are burned, sulfurdioxide is produced. The amount of SO2 formed can be determined by the reaction with hydrogen peroxide: H2O2(aq)+SO2(g)H2SO4(aq) The resulting sulfuric acid is then titrated with a standard NaOH solution. A 1.302-g sample of coal is burned and the SO2 is collected in a solution of hydrogen peroxide. It took 28.44 mL of a 0.1000-M NaOH solution to titrate the resulting sulfuric acid. Calculate the mass percent of sulfur in the coal sample. Sulfuric acid has two acidic hydrogens.arrow_forwardVitamin C is ascorbic acid, HC6H7O6, which can be titrated with a strong base. HC6H7O6(aq) + NaOH(aq) NaC6H7O6(aq) + H2O() A student dissolved a 500.0-mg vitamin C tablet in 200.0 mL water and then titrated it with 0.1250-M NaOH. It required 21.30 mL of the base to reach the equivalence point. Calculate the mass percentage of the tablet that is impurity.arrow_forwardWhen 10. L of water is added to 3.0 L of 6.0 M H2SO4, what is the molarity of the resulting solution? Assume the volumes are additive.arrow_forward
- A 1.345-g sample of a compound of barium and oxygen was dissolved in hydrochloric acid to give a solution of barium ion, which was then precipitated with an excess of potassium chromate to give 2.012 g of barium chromate, BaCrO4. What is the formula of the compound?arrow_forwardThe thallium (present as Tl2SO4) in a 9.486-g pesticide sample was precipitated as thallium(I) iodide. Calculate the mass percent of Tl2SO4 in the sample if 0.1824 g ofTlI was recovered.arrow_forwardThioridazine, C21H26N2S2, is a pharmaceutical agent used to regulate dopamine (Dopamine, a neurotransmitter, affects brain processes that control movement emotional response, and ability to experience pleasure and pain.) A chemist can analyze a sample of the pharmaceutical for the thioridazine content by decomposing it to convert the sulfur in the compound to sulfate ion. This is then trapped as water-insoluble barium sulfate (see Figure 4.4). SO42(aq, from thioridazine) + BaCl2(aq) BaSO4(s) + 2 Cl(aq) Suppose a 12-tablet sample of the drug yielded 0.301 g of BaSO4. What is the thioridazine content, in milligrams, of each tablet?arrow_forward
- (a) Butane gas, C4H10, can burn completely in air [use O2(g) as the other reactant] to give carbon dioxide gas and water vapor. Write a balanced equation for this combustion reaction. (b) Write a balanced chemical equation for the complete combustion of C3H7BO3, a gasoline additive. The products of combustion are CO2(g), H2O(g), and B2O3(s).arrow_forwardDisulfur dichloride, S2Cl2, is used to vulcanize rubber. It can be made by treating molten sulfur with gaseous chlorine. S8() + 4 Cl2(g) 4 S2Cl2(g) Complete this table of reaction quantities for the production of 103.5 g S2Cl2.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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