1. Making A Standard Solution

Questão	Responda
1st step on how to make a standard solution?	Calculate how many moles of sodium hydroxide you need using the formula: moles = concentration x volume
2nd step on how to make a standard solution?	Calculate how many grams of sodium hydroxide you need by using the formula: mass = Mr x moles
3rd step on how to make a standard solution?	Place a weighing boat on a digital balance. Record the mass. Add the required mass of solid and subtract the 2 masses to calculate the mass of the solid weighed out
4th step on how to make a standard solution?	Add distilled water to the beaker and stir all of the sodium hydroxide with a glass rod until it has dissolved
5th step on how to make a standard solution?	Use a funnel to pour the solution into a 250cm^3 volumetric flask
6th step on how to make a standard solution?	Rinse beaker, stirring rod and funnel with distilled water and add to volumetric flask
7th step on how to make a standard solution?	Top flask up to correct volume with distilled water. Ensure bottom of meniscus touches line. Add water drop by drop when near line.
8th step on how to make a standard solution?	Stopper the flask and turn it upside down a few times to ensure it's mixed well
9th step on how to make a standard solution?	Calculate exact concentration of standard solution

Resumo de Recurso

	Criado por Tania Parvaiz quase 8 anos atrás