An HCI solution has a concentration of 0,09714 M. 25,00 mL of this solution was then diluted to 250.00 ml. in a volumetric flask. The diluted solution was then titrated against 10.00 mL of a saturated Ca(OH)z solution using methyl orange indicator to reach the endpoint.

a. What is the concentration of the diluted HCl solution?
b. If 6.82 mL of the diluted HCI solution was required to reach the endpoint, what is the concentration of OH in solution?
c. What is the concentration of Ca in solution?
d. What is the Kp expression for the dissolution of Ca(OH)2?
e. Calculate the value of the Kp for Ca(OH)2?

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?