Properties and Reactions of NaNO2

The video explores whether sodium nitrite (NaNO2) is acidic, basic, or neutral when dissolved in water. It begins by discussing the neutralization reaction that forms NaNO2, involving a weak acid (HNO2) and a strong base (NaOH). The video explains how to determine the pH of the resulting solution using a table of acid and base strengths. Since HNO2 is a weak acid and NaOH is a strong base, the solution of NaNO2 in water is basic, with a pH greater than seven. The video concludes by confirming that the solution is alkaline.

What is the main focus of the video regarding NaNO2?

• Its boiling point

• Its pH level when dissolved in water

• Its color when dissolved in water

• Its melting point

Which two compounds are involved in the neutralization reaction to produce sodium nitrite?

• HNO2 and NaOH

• H2SO4 and NaOH

• HNO3 and NaOH

• HCl and NaOH

Which of the following is NOT a result of the neutralization reaction discussed?

• Water

• Sodium nitrite

• Sodium nitrate

• Hydrochloric acid

What type of acid is HNO2 considered in the video?

• Weak base

• Strong base

• Weak acid

• Strong acid

How is sodium hydroxide (NaOH) classified in terms of strength?

• Weak acid

• Strong acid

• Strong base

• Weak base

What is the role of the table mentioned in the video?

• To calculate the molecular weight

• To show the color changes in reactions

• To identify the strength of acids and bases

• To list all possible reactions

What is the expected pH level of NaNO2 when dissolved in water?

• Less than 7

• Equal to 7

• Greater than 7

• Exactly 7

What is the nature of the solution when NaNO2 is dissolved in water?

• Basic

• Neutral

• Acidic

• Amphoteric

What conclusion is drawn about NaNO2 in the video?

• It is amphoteric in water

• It is neutral in water

• It is acidic in water

• It is basic in water