Question

Lab & EQUL 0441 Pre-Laboratory Assignment acidity or Briefly comment on the can be hazardous in ways that are not necessarily related to their aware of when working with: () 1 x 10 'M HNO, solutions (2) 0.1M NHs/H,O solutions different but using 2. A student performed an experiment similar to the one that you will pertn Table 4 below ed in Table 4 solutions from the ones that you will use. The student's data are presente (1) Is a 0.1M solution of NaNO2 acidic or basic? What experimental evidence supports your answer? (2) List the solutions studied by the student that are basic. What experimental evidence supports your answer? Table 4 Student data for estimating the pH of solutions indicator color methyl orange thymolphthalein phenolphthalein methyl violet violet violet violet violet violet 0.1M solution NH-OH HNO2 C2HsNH2 NaNO2 Ca(OH)2 light blue colorless blue colorless blue red colorless red light pink red red yellow custom page 149 Lab 9 EQUL 0397 pH, Acids, and Bases (3) Using these data, compare the relative basicity of the CalODa and CH,NH, o iz solutions. Briefly explain on what basis you can or cannot make this comparison. (4) List the basic solutions in order of increasing basicity. What experimental evidence supports your answer?

Answer 1

3) nure basic than/ GI NH2- 2 P1 of Colon)2be biur 4 PH 1

PH Cic Mu → reddish beYellow 2 or Litmus pefer U S HNOg will turn Blue US 2) So ts c ヲas you Carl see in telo le ms yellow and t shows H Se 2. 2