🗊Презентация Chemistry quiz

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Слайды и текст этой презентации

Слайд 1


If 150.0 mL of 0.100 M HBr and 50.0 mL of 0.100 M KOH solutions are mixed, what are the molarities of the ions in the resulting solution? 0.0750 M in H+, 0.0750 M in Br-, 0.0250 M in K+ 0.0500 M in H+, 0.0750 M in Br-, 0.0500 M in K+ 0.0500 M in H+, 0.0750 M in Br-, 0.0250 M in K+ 0.0667 M in H+, 0.100 M in Br-, 0.0333 M in K+ 0.0500 M in H+, 0.100 M in Br-, 0.100 M in K+
Описание слайда:
If 150.0 mL of 0.100 M HBr and 50.0 mL of 0.100 M KOH solutions are mixed, what are the molarities of the ions in the resulting solution? 0.0750 M in H+, 0.0750 M in Br-, 0.0250 M in K+ 0.0500 M in H+, 0.0750 M in Br-, 0.0500 M in K+ 0.0500 M in H+, 0.0750 M in Br-, 0.0250 M in K+ 0.0667 M in H+, 0.100 M in Br-, 0.0333 M in K+ 0.0500 M in H+, 0.100 M in Br-, 0.100 M in K+

Слайд 2


A 0.742-gram sample of KHP, KC6H4(COO)(COOH), reacts with 35.0 mL of Ba(OH)2 solution. What is the molarity of the Ba(OH)2 solution? 0.127 M 0.0636 M 0.0520 M 0.208 M 0.104 M
Описание слайда:
A 0.742-gram sample of KHP, KC6H4(COO)(COOH), reacts with 35.0 mL of Ba(OH)2 solution. What is the molarity of the Ba(OH)2 solution? 0.127 M 0.0636 M 0.0520 M 0.208 M 0.104 M

Слайд 3


Calculate the normality of a solution that contains 4.5 g of (COOH)2 in 3000. mL of solution. (Assume the (COOH)2 is to be completely neutralized.) 0.033 N 0.045 N 0.066 N 0.090 N 0.12 N
Описание слайда:
Calculate the normality of a solution that contains 4.5 g of (COOH)2 in 3000. mL of solution. (Assume the (COOH)2 is to be completely neutralized.) 0.033 N 0.045 N 0.066 N 0.090 N 0.12 N

Слайд 4


A solution of H2SO4 contains 9.11 mg of H2SO4 per mL. What is the normality of the solution? (Assume the H2SO4 is to be completely neutralized by a base.) 0.0482 N 0.684 N 0.186 N 0.372 N 0.0930 N
Описание слайда:
A solution of H2SO4 contains 9.11 mg of H2SO4 per mL. What is the normality of the solution? (Assume the H2SO4 is to be completely neutralized by a base.) 0.0482 N 0.684 N 0.186 N 0.372 N 0.0930 N

Слайд 5


How many equivalent weights of phosphoric acid are contained in 500. mL of 2.00 M phosphoric acid? (Assume the acid is to be completely neutralized by a base.) 1.00 eq 2.00 eq 3.00 eq 4.00 eq 6.00 eq
Описание слайда:
How many equivalent weights of phosphoric acid are contained in 500. mL of 2.00 M phosphoric acid? (Assume the acid is to be completely neutralized by a base.) 1.00 eq 2.00 eq 3.00 eq 4.00 eq 6.00 eq

Слайд 6


What mass of NaOH would be required to neutralize the acid in 75.0 mL of 0.880 N HCl? 2.64 g 5.28 g 2.6 kg 3.83 g 6.60 g
Описание слайда:
What mass of NaOH would be required to neutralize the acid in 75.0 mL of 0.880 N HCl? 2.64 g 5.28 g 2.6 kg 3.83 g 6.60 g

Слайд 7


If 20.8 mL of Ba(OH)2solution reacts with 0.306 g of KHP, KC6H4(COO)(COOH), what is the normality of the Ba(OH)2 solution? 0.0361 N 0.144 N 0.300 N 0.175 N 0.0721 N
Описание слайда:
If 20.8 mL of Ba(OH)2solution reacts with 0.306 g of KHP, KC6H4(COO)(COOH), what is the normality of the Ba(OH)2 solution? 0.0361 N 0.144 N 0.300 N 0.175 N 0.0721 N

Слайд 8


What is the oxidation number of phosphorus in KH2PO4? +1 +2 +3 +4 +5
Описание слайда:
What is the oxidation number of phosphorus in KH2PO4? +1 +2 +3 +4 +5

Слайд 9


What is the oxidation number of P in the H2PO4-ion? -3 +2 +3 +4 +5
Описание слайда:
What is the oxidation number of P in the H2PO4-ion? -3 +2 +3 +4 +5

Слайд 10


Balance the following formula unit equation for a reaction. What is the sum of all of the coefficients? K2Cr2O7 + HCl {image} KCl + CrCl3 + Cl2+ H2O 20 22 26 29 32
Описание слайда:
Balance the following formula unit equation for a reaction. What is the sum of all of the coefficients? K2Cr2O7 + HCl {image} KCl + CrCl3 + Cl2+ H2O 20 22 26 29 32

Слайд 11


Balance the following net ionic equation. What is the sum of the coefficients? (COOH)2 + MnO4- + H+ {image} CO2 + Mn2++ H2O 27 29 31 33 35
Описание слайда:
Balance the following net ionic equation. What is the sum of the coefficients? (COOH)2 + MnO4- + H+ {image} CO2 + Mn2++ H2O 27 29 31 33 35

Слайд 12


Balance the following net ionic equation. What is the sum of the coefficients? MnO4- + Se2- {image} MnO2+ Se (basic solution) 20 22 24 26 28
Описание слайда:
Balance the following net ionic equation. What is the sum of the coefficients? MnO4- + Se2- {image} MnO2+ Se (basic solution) 20 22 24 26 28

Слайд 13


An impure 0.500-gram sample of FeSO4 reacts with 20.0 mL of 0.0200 M KMnO4. Assuming that the impurities do not react with KMnO4, what is the percentage of FeSO4 in the sample? MnO4- + 8H+ + 5Fe2+ {image} Mn2+ + 5Fe3+ + 4H2O 52.3% 56.6% 60.8% 64.5% 69.2%
Описание слайда:
An impure 0.500-gram sample of FeSO4 reacts with 20.0 mL of 0.0200 M KMnO4. Assuming that the impurities do not react with KMnO4, what is the percentage of FeSO4 in the sample? MnO4- + 8H+ + 5Fe2+ {image} Mn2+ + 5Fe3+ + 4H2O 52.3% 56.6% 60.8% 64.5% 69.2%

Слайд 14


A solution of Fe(NH4)2(SO4)2 · 6H2O containing 2.10 grams of the compound is titrated with acidic Na2Cr2O7 solution. If 41.6 mL of the Na2Cr2O7 solution is required, what is the molarity of the Na2Cr2O7 solution? The reaction products include Cr3+ and Fe3+. 0.129 M 0.0215 M 0.0644 M 0.0387 M 0.0744 M
Описание слайда:
A solution of Fe(NH4)2(SO4)2 · 6H2O containing 2.10 grams of the compound is titrated with acidic Na2Cr2O7 solution. If 41.6 mL of the Na2Cr2O7 solution is required, what is the molarity of the Na2Cr2O7 solution? The reaction products include Cr3+ and Fe3+. 0.129 M 0.0215 M 0.0644 M 0.0387 M 0.0744 M

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