Question 27(1 point) Saved A limiting reagent is Question 27…
QuestionAnswered step-by-stepQuestion 27(1 point) Saved A limiting reagent is Question 27…Question 27 (1 point) Saved A limiting reagent isQuestion 27 options: A) The product that is produced in a reaction B) The reactant that is completely consumed in a reaction C) The reactant that is still present after a reaction has done to completion. D) The product that is still present after a reaction has done to completion. Question 28 (1 point) To determine the concentration of KOH(aq) in a titration experiment, a student found that 18.62 mL of 0.0975 mol/L HNO3(aq) acid was needed to completely neutralize 20.0 mL of KOH(aq). From this information, it can be concluded that the concentration of the KOH(aq) isQuestion 28 options: A) 0.003 82 mol/L B) 0.001 91 mol/L C) 0.0908 mol/L D) 0.105 mol/L Question 29 (1 point) A list of procedural steps a lab partner wrote for recording the evidence for a titration follows. 1. Add the titrant until endpoint is reached. 2. Record the initial buret reading. 3. Record the final buret reading. 4. Determine the difference in the buret readings. The correct sequence of the procedure isQuestion 29 options: A) 1, 2, 3, and 4 B) 3, 2, 1, and 4 C) 2, 1, 3, and 4 D) 3, 1, 2, and 4 Question 30 (1 point) In a titration experiment, the titrant isQuestion 30 options: A) the solution to which an indicator is added B) always the standard solution C) the sample in the flask D) poured into the burette Question 31 (1 point) The equipment needed to carry out a titration isQuestion 31 options: A) heat source, test tube, and filter paper B) erlenmeyer flask, pipet, and burette C) hot plate, pipet, and filter paper D) heat source, pipet, and burette Question 32 (1 point) The most suitable indicator for the titration isQuestion 32 options: A) phenolphthalein B) methyl orange C) chlorophenol red D) methyl violet Question 33 (1 point) A base is titrated with an acid solution until the indicator changes colour. This change in the colour of the indicator is referred to as theQuestion 33 options: A) neutralization point B) equivalence point C) equilibrium point D) end point Question 34 (1 point) The Cancarb plant in Medicine Hat produces carbon, C(s), from methane gas. To cool the carbon in the production line, it is sprayed with water. In this process, the water becomes increasingly basic. The [OH-] of the resulting solution is 3.2 x 10-4 mol/L. Two indicators, used separately, that could be used to confirm the pH of the solution produced at Cancarb areQuestion 34 options: A) indigo carmine and 1,3,5-trinitrobenzene B) orange IV and bromocresol green C) phenolphthalein and indigo carmine D) methyl violet and cresol red Question 35 (1 point) Vinegar, an aqueous solution of acetic acid, is used to preserve and flavour food. Most of the vinegar used for this purpose has an acetic acid concentration of 0.83 mol/L. Pickling vinegar has a pH of 2.37. When 3 drops of bromocresol green and 3 drops of phenolphthalein are added to a sample of this vinegar, the resulting colour of the solution isQuestion 35 options: A) purple B) blue C) yellow D) green Question 36 (1 point) Which of the following substances can be added to the blood of a young child with kidney disease in order to control acidosis?Question 36 options: A) HCO3-(aq) B) H2O(l) C) CO2(g) D) H2SO4(aq) Question 37 (1 point) A sample of rainwater is poured into five test tubes. A different indicator is added to each test tube. Four of the observations are recorded in the table below. Indicator Colourmehtyl red yelllowphenol red yellowbromocresol green bluephenophthalein colourlessbromothymol blue ? The best estimates of the pH of the rainwater and the predicted colour of the sample containing bromothymol blue are Question 37 options: A) 6.0 and blue B) 7.6 and yellow C) 6.0 and yellow D) 7.6 and blue ScienceChemistryCHEM 208Share Question
