1. The pH of soda is generally around 3, while the pH of drinking water is generally around 7. A student comparing the two beverages concludes that soda is generally 10,000 more acidic than water. In three to four sentences, explain if her conclusion is correct or incorrect and why.

2. If a balloon is kept at a constant temperature, what pressure change would need to occur for the volume to increase to three times the size? Explain your answer.