January 2016 Chemistry Regents #62-65

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Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Question 51-53 Questions 54-56
 Questions 57-61 Questions 62-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-82 Questions 83-85

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Questions

 

 

Base your answers to questions 62 and  65 on the information below.

A NaOH(aq) solution and an acid-base indicator are used to determine the molarity of an HCl(aq) solution. A 250-milliliter sample of the HCl(aq) is exactly neutralized by 15.0 milliliters of 0.20 M NaOH(aq).

62 Identify the laboratory process described in this passage. [1]

Answer==>titration

63 Complete the equation in your answer booklet for the neutralization reaction that occurs, by writing a formula for each product. [1]

HCl(aq)  +  NaOH(aq) ==> ________   +  ________

Answer==>HCl(aq) + NaOH(aq) ==> NaCl  + H2O

64 Based on the data, the calculated molarity of the HCl(aq) solution should be expressed to what number of significant figures? [1]

Answer==>  2

65 Using the data, determine the concentration of the HCl(aq). [1]

Answer==>   0.12M

on to Questions 66-68

 

 
 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Question 51-53 Questions 54-56
 Questions 57-61 Questions 62-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-82 Questions 83-85

 

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