Sorry for Image size, I need help onthe last three problems, it is something that my girlfriend and Iare struggling on.
How many moles of NaOH were used to reach the endpoint? Think about the balanced chemical equation for the neutralization reaction between HC1 and NaOH! Remember, you calculated the number of moles of HC1 present initially in Question 3. Use your answers to Questions 4 and 5 to calculate the molarity of the NaOH solution. Express your answer to the correct number of significant figures. In Part 2 of this you will use the standardized NaOH solution in a titration with H2SO4 of unknown concentration. The balanced chemical equation for this reaction is written below, WITHOUT COEFFICIENTS: What are the correct coefficients when this equation is properly balanced? 10.00 mL of the unknown H2SO4 solution is titrated with the standardized NaOH solution (you calculated the concentration of the NaOH in Question 6). The initial buret reading (V,) at the beginning of the titration was 0.28 mL. The final buret reading (V,) at the end of the titration was 37.08 mL. How many moles of NaOH were added to reach the endpoint? How many moles of H2SO4 were present at the beginning of this titration? Be sure to express your answer to the correct number of significant figures! What is the molarity of the H2S04 solution?
