$$M_2$$ = \frac{$$M_1$$ $$V_1$$}{$$V_2$$} = \frac{12.1 \times 5.00}{250.00} = 0.242\ \text{M}$$

$$M_{NO_3$^-} = \frac{(0.300 \times 10.0) + (0.200 \times 30.0)}{40.0} = \frac{3.0 + 6.0}{40.0} = 0.225\ \text{M}$$

$$M_{H_2SO_4} = \frac{M_{NaOH} \times V_{NaOH}}{2 \times V_{H_2SO_4}} = \frac{0.1000 \times 30.00}{2 \times 50.00} = 0.0300\ \text{M}$$

Question 1

Which of the following compounds is a strong electrolyte when dissolved in water?

Accepted Answer

NaOH

Question 2

A 5.00 mL aliquot of 12.1 M HCl is diluted to a final volume of 250.00 mL. What is the final molarity of the solution?

Accepted Answer

$$M_2$$ = \frac{$$M_1$$ $$V_1$$}{$$V_2$$} = \frac{12.1 	imes 5.00}{250.00} = 0.242\ 	ext{M}$$

Question 3

Which of the following is the correct net ionic equation for the reaction between NaCl(aq) and AgNO\_3(aq)?

Accepted Answer

$$Ag^+(aq) + Cl^-(aq) \rightarrow AgCl(s)$$

Question 4

Which of the following is NOT a strong acid?

Accepted Answer

HNO\_2

Question 5

What is the molarity of nitrate ion after mixing 10.0 mL of 0.300 M KNO\_3 with 30.0 mL of 0.200 M NaNO\_3, assuming volumes are additive?

Accepted Answer

$$M_{NO_3$^-} = \frac{(0.300 	imes 10.0) + (0.200 	imes 30.0)}{40.0} = \frac{3.0 + 6.0}{40.0} = 0.225\ 	ext{M}$$

Question 6

Which of the following is a correct statement about weak electrolytes?

Accepted Answer

They ionize only partially in water.

Question 7

Which of the following compounds is insoluble in water at 25°C according to solubility rules?

Accepted Answer

Mg\_3(PO\_4)\_2

Question 8

What is the oxidation number of chlorine in the hypochlorite ion, ClO\^-?

Accepted Answer

$$+1$$

Question 9

Which of the following reactions is a redox reaction?

Accepted Answer

$$2H_2(g) + O_2$(g) \rightarrow 2H_2O(g)$$

Question 10

Which of the following is the correct balanced equation for the neutralization of H\_2SO\_4 with NaOH?

Accepted Answer

$$H_2SO_4(aq) + 2NaOH(aq) \rightarrow Na_2SO_4(aq) + 2H_2O(l)$$

Question 11

A titration requires 30.00 mL of 0.1000 M NaOH to neutralize 50.00 mL of H\_2SO\_4. What is the molarity of the original H\_2SO\_4 solution?

Accepted Answer

$$M_{H_2SO_4} = \frac{M_{NaOH} 	imes V_{NaOH}}{2 	imes V_{H_2SO_4}} = \frac{0.1000 	imes 30.00}{2 	imes 50.00} = 0.0300\ 	ext{M}$$

Question 12

Which of the following is the correct definition of a Brønsted-Lowry acid?

Accepted Answer

A substance that donates a proton (H\^+)

Question 13

Which of the following is the correct oxidation number for oxygen in H\_2O\_2 (hydrogen peroxide)?

Accepted Answer

$$-1$$

Question 14

Which of the following substances is a non-electrolyte when dissolved in water?

Accepted Answer

CH\_3OH (methanol)

Question 15

Which of the following metals will displace hydrogen from acid according to the activity series?

Accepted Answer

Zinc (Zn)

Question 16

In the reaction $$2Ca(s) + O_2$(g) \rightarrow 2CaO(s)$$, which element is oxidized?

Accepted Answer

Calcium

Question 17

Which of the following is the correct formula for calculating the number of moles from molarity and volume?

Accepted Answer

$$n = M 	imes V$$

Question 18

Which of the following is a property of bases?

Accepted Answer

They feel slippery.

Question 19

Which of the following is the correct net ionic equation for the reaction between HCl(aq) and NaOH(aq)?

Accepted Answer

$$H^+(aq) + OH^-(aq) \rightarrow H_2O(l)$$

General Chemistry Study Notes: Solutions, Electrolytes, Acids/Bases, and Redox Reactions

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