What is the total mass of kno3 that must be dissolved in 50. grams of h2o at 60.°c to make a saturated solution?
(1) 32 g (3) 64 g
(2) 53 g (4) 106 g

53g

Explanation:

First we plot the solubility graph for KNO3 as shown in the image attached. From the graph, we see that the solubility of KNO3 per 100g of solution is 106g.

Hence if 106g of KNO3 dissolves in 100g

Xg of KNO3 dissolves in 50g

50×106/100 = 53g of KNO3

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.