Answer:
A. Boyle's Law
B. Charles' Law
C. Gay-Lussac's Law
Explanation:
An air bag inflates due to the decomposition of sodium azide or NaN₃ to completely fill the bag with nitrogen gas which is an example of Boyle's law, which states that the pressure of a given mass of gas is inversely proportional to its volume, hence due to the estricted volume of the airbag, the pressure of the nitrogen gas in the bag increses protecting the occupants of a cr from injuries in a crash
Helium balloon decrease in sice in a freezer is an example of Charlles law which states that the volume of a given mass of gas is nverslely proportionl to its temperature at constant pressure
A can of spray paint will explode if tossed into a fire is an example of Gay-Lussac's Law which states that the pressure of a given mass of gas is directly proportional to its temperature hence the increased pressure causes the can ti explode
Covalent bonds keep the hydrogen and oxygen atoms together
Both those acids are strong acids, so it's a titration with a strong acid and a strong base, creating a neutralization reaction.
a) The pH before any NaOH has been added would just be the -log[HCL]. -log[.1] is equal to 1.
b) First, figure out how many mmol of HCl you have. x/25=.1 would be 2.5 mmol of HCl. There's x/10=.1 of NaOH, so you have 1 mmol of NaOH. 1 mmol of the HCl reacts away, so you have 1.5 mmol of HCl in 35 mL. 1.5/35 = .042 M. -log(.042) = 1.38.
c) In a titration with a strong acid and a strong base, the pH at the equivalence point is always equal to 7.
d) Now you have 10 mL beyond the equivalence point. We need to figure out how much was added to get to the equivalence point so we can calculate the concentration of NaOH to find the pOH and then pH. Well, since they have equal concentrations, it would be 25 mL of NaOH, plus the 10 we just added. So we have 35 mL + 25 mL of the HCl, which is 60 mL total. If we had 35 mL of NaOH originally, that would be 3.5 mmol of NaOH (x/35=.1). 3.5/60 is .0583. -log.0583 is 1.23. pH = 14 - pOH. 14 - 1.23 = 12.77