An experiment in chm 2045 requires students to prepare a 1.0 m aqueous solution of potassium phosphate. jennifer fills a 1.0 liter volumetric flask to the calibration line with water. she then weighs out 212.3 g of potassium phosphate and adds it to the volumetric flask. joe weighs out 212.3 g of potassium phosphate and adds it to a 1.0 liter volumetric flask. he then fills the volumetric flask to the calibration line with water. which student has correctly prepared a 1.0 m aqueous solution of potassium phosphate?

Joe

Explanation:

The procedure for preparing a standard solution of a solid is that the solid is accurately weighed in a balance, carefully transferred to the specified volumetric flask and then made up to mark with distilled water.

Option C. Joe

Explanation:

To prepare 1 M potassium phosphate, K3PO4, do the following:

Step 1:

Determine mass of K3PO4 needed. In this case, 212.3g of K3PO4 is needed.

Step 2:

weigh out 212.3g from the K3PO4 sample using a weighing balance.

Step 3:

Put the weighed 212.3g of K3PO4 into a 1 L volumetric flask and fill with water to the mark.

The solution produced is 1 M K3PO4.

From the above illustrations and considering the question given above, only Joe made the right preparation of 1 M aqueous solution of K3PO4.

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