Recrystallization of NaCl by Erika Pastrana [Student FVHS] https://padlet.com/17pastranae195/y87pk75plx Period 3 Group 5: Erika Pastrana, Allen Tran, Tara Nguyen en-us 2013-11-13 18:52:29 UTC 2023-06-05 04:25:03 UTC hello@padlet.com http://d262le4z25sx36.cloudfront.net/portraits/crane_yellow.png Purpose 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16640933 You will learn to

To perform and master a recrystallization of an ionic compound

To write a procedure for a simple experiment

To calculate for percent error in an experiment

To understand how results affect percent error

To identify sources of error in experiments]]> 2013-11-14 18:50:48 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16640933 Pre-Lab discussion: 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16641011 Recrystallization is one way of isolating an ionic compound from a solution. If several ionic compounds are present in an aqueous solution, then a precipitation reaction may be performed to remove the unwanted ions. In this experiment, a known amount of NaCl will be dissolved in some water, and then recrystallized by boiling off the water.

 ]]> 2013-11-14 18:51:20 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16641011 Materials 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16641353

NaCl. Use a mass of about 1-2 grams.

Several pieces of glassware

Heating plate

Electronic balance

Water. Use about 25 mL

]]> 2013-11-14 18:53:33 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16641353 Trial #1 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16792586 NaCl being recrystallized.

]]> 2013-11-18 04:29:58 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16792586 Trial #1 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16792651 The mass of the NaCl inside the beaker is 1.56 grams.

]]> 2013-11-18 04:32:05 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16792651 Trial #1 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16792683 The weight of the beaker itself is 159.65 grams.

]]> 2013-11-18 04:33:02 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16792683 Trial #1 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16792748 The mass of the recrystallized NaCl with the beaker is 161.16 grams.

]]> 2013-11-18 04:35:46 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16792748 Trial #1 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16792760 The overview of the beaker.

]]> 2013-11-18 04:36:49 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16792760 Trial #1 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16793166 The beaker and watch glass on a heater.

]]> 2013-11-18 04:53:25 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16793166 Trial #2 17tranaq313 https://padlet.com/17pastranae195/y87pk75plx/wish/16949551 Percent error

]]> 2013-11-19 18:45:08 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16949551 Trial #1 17tranaq313 https://padlet.com/17pastranae195/y87pk75plx/wish/16949987 Percent error

]]> 2013-11-19 18:48:14 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16949987 Trial #3 17tranaq313 https://padlet.com/17pastranae195/y87pk75plx/wish/16951268 Percent error

]]> 2013-11-19 18:57:46 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16951268 Trial #2 table 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16951457 2013-11-19 18:59:36 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16951457 Question #2 17tranaq313 https://padlet.com/17pastranae195/y87pk75plx/wish/16982288 The sources of error could be that some salt was stuck on the watch glass while boiling or the boiling bubbles splashed out of the beaker.

]]> 2013-11-20 02:30:11 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16982288 Question #3 17tranaq313 https://padlet.com/17pastranae195/y87pk75plx/wish/16983720 The sources of error could be that there was some water that didn't dry yet or added too much water.

]]> 2013-11-20 03:17:25 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16983720 Questions and Conclusions  17pastranae195 https://padlet.com/17pastranae195/y87pk75plx/wish/16983928 2013-11-20 03:25:22 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16983928 Question #4 17tranaq313 https://padlet.com/17pastranae195/y87pk75plx/wish/16984234 Synthesize the information, skills, and concepts acquired through the curriculum. It's addressed in this activity because we combined our various data and used it to make an answer.

]]> 2013-11-20 03:34:19 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16984234 Trial 2 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16987556 The mass of the watch glass is 62.48 grams.

]]> 2013-11-20 06:03:52 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16987556 Trial 2 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16987596 The mass of the flask is 129.41 grams.

]]> 2013-11-20 06:06:08 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16987596 Trial 2  17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16987598 2013-11-20 06:06:14 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16987598 Trial 1 table 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16987875 2013-11-20 06:23:32 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16987875 Trial 3 table 17nguyentn239 https://padlet.com/17pastranae195/y87pk75plx/wish/16987933 2013-11-20 06:26:16 UTC https://padlet.com/17pastranae195/y87pk75plx/wish/16987933