Monday
March 30, 2015

Homework Help: chemistry

Posted by titration on Tuesday, October 7, 2008 at 5:36pm.

Can someone make sure that I am correct with my first solution? Also I need help with the 2nd problem. I am a little confused about where to begin.

1.) 1.7423g of potassium dichromate were placed in a 250.00 mL volumetric flask and water was added to the mark. Calculate the molarity of the dichromate solution to the appropriate number of significant figures.

0.0237M ?? is this correct

2.) a 1.2523 g sample of a souluble iron(II) salt was dissolved in water and titrated with the dichromate solution prepared in question #1. 37.50mL of the dichromate solution was required to reach the end point.

a.) calculate the mass in grams of iron in the sample.

b.) Calculate the percent of iron in the sample.

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