High School General Chemistry PreTest Final Questions help


Hello! I am a high school student in general chemistry in need of help with these questions for a PreTest final! This really needs to be done within the next few hours since its due tomorrow! Let me know if you have any questions! Thanks!!

H2(SO4)(aq) + 2NaOH(aq) >>> Na2(SO4)(aq) + 2H2O(l)   (for questions 1-3)

1) A sample of sodium hydroxide has a pH of 13.2. What is its molarity?

2) A stock solution of 1.0M NaOH and an indicator are used to neutralize 30.0mL of a sulfuric acid solution. If is required 20.4mL of sodium hydroxide, what was concentration of the acid?

3) What is observed at the endpoint of a titration and what is true about the mixture at that time?


4) Write a balanced equation for the reaction between sodium chlordie and lead (ll) nitrate. Remember to balance the equation and include states of matter.

a) If 35.0g of NaCL and 45.9g of Pb(NO3)2 are combined and react, how many grams of NaNO3 will theoretically be produced? (consider limiting reactants)

b) If 20.0g of NaNO3 are actually produced in the problem above, what is the percent yield?

c)How many grams of excess reactant are left over?

d)If 75.36g of Pb(NO3)2 are added o 575g of water what is the new boiling point of the solution?