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18. All are characteristics of a good primary standard except a. high purity c. low molecular weight b. reasonable solubility in titration medium d. atmospheric

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18. All are characteristics of a good primary standard except a. high purity c. low molecular weight b. reasonable solubility in titration medium d. atmospheric stability 19. What volume of 0.1025MHCl must be added to 15.64mL of 0.0956MNH3 to produce a solution of pH= 9.00? a. 5.3mL b. 7.3mL c. 9.3mL d. 11.3mL

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