(b) Solubility data for barium hydroxide and calcium hydroxide are given in the table below. (i) Use the data given in the table to calculate the concentration, in moldm^-3 of a saturated solution of calcium hydroxide (M_(r)=74.1) at 20^circ C __

Question

Answer 1

The concentration in

of a saturated solution of calcium hydroxide, at

is [calculate]:

Round to appropriate significant figures based on the problem's context, i.e., three significant figures.

Answer 2

## Step 1: To find the concentration in molar units, we should first convert the solubility from grams per decimetre cubed (

) to moles per decimetre cubed (

). To do this, we can divide the solubility in

by the molar mass. ###

## Step 2: Substitute the given values into this formula. The solubility is 1.73

and the molar mass \( M_{\mathrm{r}} (=) \) 74.1 g/mol for calcium hydroxide. ###

Question