Chemical Properties and Reactions

The video lecture covers various chemistry concepts using reference tables. It starts with formulas for sodium sulfate and calcium nitrate from Table E, explores solubility rules with Table F, and discusses unsaturated solutions using Table G. Vapor pressure is examined with Table H, followed by pH levels using Table M. The decay equation is explained with Table N, and hydrocarbon formulas are discussed using Table Q. Electronegativity trends across Period 2 are covered with Table S, and the heat of fusion is calculated using Table T.

What is the correct chemical formula for sodium sulfate?

• Na2S

• NaSO4

• Na2SO4

• NaSO3

Which of the following is true about silver nitrate according to Table F?

• It reacts with water

• It is soluble

• It is insoluble

• It forms a precipitate

If 30g of N3 is dissolved at 80°C, what is the state of the solution?

• Precipitated

• Saturated

• Unsaturated

• Super saturated

What is the vapor pressure of ethanol at 70°C according to Table H?

• 85 kPa

• 90 kPa

• 80 kPa

• 75 kPa

At what pH does bromo cresol green turn yellow?

• Above 6

• Exactly 7

• Below 3.8

• Above 4.5

What particle is emitted during the decay of N16?

• Alpha particle

• Neutron

• Beta particle

• Gamma ray

What is the formula for one-pentin?

• C5H6

• C5H10

• C5H8

• C5H12

What is the structural feature of Buton?

• Aromatic ring

• Single bond

• Double bonded O not on the end

• Triple bond

How does electronegativity change across Period 2?

• Remains the same

• Fluctuates

• Increases

• Decreases

How much energy is needed to melt 2.0g of ice using the heat of fusion?

• 500 kJ

• 334 kJ

• 1000 kJ

• 668 kJ