If the atmospheric pressure is 742 mmHg and the level of water in the graduated cylinder is 13.1 cm higher than the level of the water exposed to the atmosphere, what is the total pressure of gases inside the graduated cylinder?Įnter your answer numerically in units of mmHg. The answer is where the line passes A student performs an experiment where gas is collected over water in an upside down graduated cylinder. At what approximate added volume of titrant does the equivalence point occur? Enter your answer numerically in units of mL.
then use find the x and y intercept to find the second value (y intercept) Examine the second derivative plot shown below. Enter each of your answers as whole numbers without any rounding. ans 1.381 What is the equation of a line, in slope-intercept form, that connects the following two data points?Įnter your answer by filling in the following blanks. What is the concentration of the Fe2+ solution? Report your response to three digits after the decimal. The equivalence point is reached after 16.247 mL of Ce4+ solution is added The solution is titrated with 0.878 M Ce4+ solution
analyte is citric acid A titration is performed as follows:ġ0.338 mL of Fe2+ solution of unknown concentration is charged into a 100 mL beaker What is the analyte in this titration? answers: titrant is sodium hydroxide. Phenolphthalein changes color from colorless to pink between pH of 7 - 9. A few drops of phenolphthalein is added to visualize the pH change. A solution of citric acid of unknown concentration, prepared in deionized water, is titrated with standardized sodium hydroxide solution, also in deionized water. ans 6.6Īnswer will be wherever the graph suddenly spikes. At what approximate added volume of titrant does the equivalence point occur? Enter your answer numerically.
0 kommentar(er)
