Question 1

Which of the following chemical equations represents a double displacement reaction?

Accepted Answer

$$\ce{NaCl} + \ce{$$AgNO_3$$} \rightarrow \ce{$$NaNO_3$$} + \ce{AgCl}$$

Question 2

A sample contains 0.50 moles of glucose ($$\ce{C_6H_{12}O_6$}). $$What is the mass of glucose in grams? (Molar mass of glucose = $$180 \ \mathrm{g/mol})$$

Accepted Answer

$$90 \ \mathrm{g}$$

Question 3

Which of the following is NOT a type of chemical reaction among the five main categories?

Accepted Answer

Neutralization

Question 4

Which catalyst is commonly used in the hydrogenation of vegetable oils?

Accepted Answer

Platinum ($$\ce{Pt})$$

Question 5

Convert a pressure of $$760 \ \mathrm{mmHg} to $$atmospheres ($$\mathrm{atm}).$$

Accepted Answer

$$1 \ \mathrm{atm}$$

Question 6

A gas occupies $$2.0 \ \mathrm{L} at$$ $$1.0 \ \mathrm{atm}$$ and $$300 \ \mathrm{K}. $$What will its volume be at $$2.0 \ \mathrm{atm}$$ and $$300 \ \mathrm{K}$$? (Assume ideal gas behavior)

Accepted Answer

$$1.0 \ \mathrm{L}$$

Question 7

Which law allows you to calculate the total pressure of a mixture of gases?

Accepted Answer

Dalton's Law of Partial Pressures

Question 8

How many moles of $$\ce{NaCl}$$ are present in $$117 \ \mathrm{g} of$$ $$\ce{NaCl}$$? (Molar mass of $$\ce{NaCl}$$ = $$58.5 \ \mathrm{g/mol})$$

Accepted Answer

$$2.0 \ \mathrm{mol}$$

Question 9

A solution is prepared by dissolving $$10 \ \mathrm{g} of$$ $$\ce{NaOH} in $$enough water to make $$500 \ \mathrm{mL} of $$solution. What is the molarity of the solution? (Molar mass of $$\ce{NaOH}$$ = $$40 \ \mathrm{g/mol})$$

Accepted Answer

$$0.5 \ \mathrm{M}$$

Question 10

Which of the following is a strong electrolyte?

Accepted Answer

$$\ce{NaCl} (aq)$$

Question 11

Calculate the pH of a solution with $$[\ce{H^+}] = 1 	imes 10$$^{-4}$$ \ \mathrm{M}.$$

Accepted Answer

$$4$$

Question 12

Which of the following pairs are acid-base conjugates?

Accepted Answer

$$\ce{NH_4$^+}$$ / $$\ce{NH_3$}$$

Question 13

A titration requires $$25.0 \ \mathrm{mL} of$$ $$0.100 \ \mathrm{M}$$ $$\ce{NaOH} to $$neutralize $$50.0 \ \mathrm{mL} of$$ $$\ce{HCl}. $$What is the concentration of $$\ce{HCl}$$?

Accepted Answer

$$0.050 \ \mathrm{M}$$

Question 14

Which of the following is the correct IUPAC name for the compound $$\ce{CH_3CH_2CH_2CH_3}$$?

Accepted Answer

Butane

Question 15

Which functional group is present in an aldehyde?

Accepted Answer

$$-CHO$$

Question 16

Which reaction is used to test for the presence of an aldehyde?

Accepted Answer

Tollens' test

Question 17

Which of the following is a reduction reaction?

Accepted Answer

$$\ce{CH_3CHO} + \ce{H_2$} \rightarrow \ce{CH_3CH_2OH}$$

Question 18

Which condensed structure corresponds to the line-angle structure of ethane?

Accepted Answer

$$\ce{CH_3CH_3}$$

Question 19

Which of the following is the correct condensed structure for benzene?

Accepted Answer

$$\ce{C_6H_6}$$

Question 20

Which of the following reactions is a dehydration reaction?

Accepted Answer

$$\ce{C_2H_5OH} \rightarrow \ce{C_2H_4} + \ce{H_2O}$$

GOB Chemistry Midterm 2 Study Guide: Key Concepts and Applications

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