Acid-Base Reactions and Properties

The video explores whether potassium phosphate (K3PO4) is acidic, basic, or neutral when dissolved in water. It begins by identifying the neutralization reaction that forms K3PO4 from phosphoric acid and potassium hydroxide. The video then examines the strength of the acid and base, noting that phosphoric acid is a weak acid and potassium hydroxide is a strong base. Based on these strengths, the video concludes that K3PO4 in water results in a basic solution with a pH greater than seven.

What is the main question addressed in the video regarding potassium phosphate?

• Whether it is a strong electrolyte

• Whether it is soluble in water

• Whether it is acidic, basic, or neutral in water

• Whether it reacts with metals

What are the reactants in the neutralization reaction that forms potassium phosphate?

• Sulfuric acid and sodium hydroxide

• Hydrochloric acid and potassium carbonate

• Phosphoric acid and potassium hydroxide

• Potassium chloride and water

What type of reaction occurs between phosphoric acid and potassium hydroxide?

• Combustion reaction

• Decomposition reaction

• Neutralization reaction

• Redox reaction

Which of the following is true about phosphoric acid?

• It is a neutral compound

• It is a strong base

• It is a weak acid

• It is a strong acid

What is the nature of potassium hydroxide in terms of acid-base strength?

• Strong acid

• Weak base

• Strong base

• Weak acid

What is the pH nature of a solution formed by a strong base and a weak acid?

• Basic

• Acidic

• Neutral

• Amphoteric

What is the pH of a solution of K3PO4 in water?

• Greater than 7

• Equal to 7

• Less than 7

• Exactly 7.5

What conclusion is drawn about the solution of K3PO4 in water?

• It is neutral

• It is acidic

• It is amphoteric

• It is basic