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Chapter 19: Q1P (page 484)

This problem can be worked by calculator or with the spreadsheet in Figure 19-4. Consider compounds X and Y in the example labeled 鈥淎nalysis of a Mixture, Using Equations 19-6鈥� on page 464. Find [X] and [Y] in a solution whose absorbance is 0.233 at 272 nm and 0.200 at 327 nm in a 0.100-cm cell.

Short Answer

Expert verified

The solution for [X] isx=8.034鈥�10-5M

The solution for [Y] isy=2.62鈥�10-4M

Step by step solution

01

Find the solution for [X] :

X=0.2333870.2006421640387399642X=0.233鈥�642-387鈥�0.2001640鈥�642-399鈥�387X=72.186898467X=8.034鈥�10-5M

02

Find the solution for [Y]:

The solution of [Y] can be calculated as follows

y=16400.2333990.2001640387399642y=1640路0.200-399路0.2331640路642-399路387y=235.033898467y=2.6.10-4M

03

Spreadsheet:

The formula use for the cell F5 and F6

= MMULT(MINVERSE(B5:C6); D5:D6)

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Most popular questions from this chapter

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