Question

Part A How would you prepare 500 mL of a 70 M NaOH solution using solid NaOH pelets? Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submittin your ans Reset Help Dissolve of NaOH pellets into about 400 mL of water and make up the total volume to 500 ml. This should be done as the dissolving of NaOH pelos provides water evaporation 10-3 gives off a lot of heat slowly e

Answer 1

Dissolve 140 g of NaOH pellets into about 400 mL of water and make up the volume to 500 mL. This should be done slowly as the dissolving of NaOH pellets gives off a lot of energy.

Moles of Naoh required = 500 ml x 7.0m = (500 L x70 moh - 3.5 mol Маю % Мазн тоа шved = 40 х 4]ас мал тоон - 3.5 mo? x 40.0gmist? = 1409 Dissolving of Naoh should be done slowly as it is a highly exothermic reaction ( produces a lot of heat). Thes the complete sentence is: Dissolve (140 g of Naoh pallets into about 400 m of water and make up the volume to 500 ml. This should be done slowly as the dissolving of Naoh pallets I gives off a lot of energy