Question

Readthe following andchoose your correct answerfor each question from (9.1 to 9.4)

Pragya tested the solubility of three different substances at different temperatures and

collected, the data as given below (results are given in the following table, as grams of

substance dissolved in 100 grams of water to form a saturated solution). ☝☝☝


1) What mass of potassium nitratewould beneededto produce asaturated solution

of potassium nitrate in 50 grams of water at 313 K?

(a) 35.2 g
(b) 31.0 g
(c) 32.8
(d) 33 g

2) Pragya makes a saturated solution of potassium chloride in water at 353K and leaves the solution to coo! at room temperature. What would she observe as the

solution cools? Explain.

(a) crystal of potassium chloride (b)crystal of potassiumnitrate

(c) crystal of ammonium chloride
(d)crystal of sodiumchloride

3) Find the solubility of each salt at 293 K. Which salt has the highest solubility at this

temperature?

(a) potassium chloride
(b) ammonium chloride

(c)sodium chloride (d)potassium nitrate

9.4 What is the effect of change of temperature on the solubility of a salt?

(a) decreases
(b)increases
(c)both A and B
(d) none of the above​

Answer 1

Answer:

hope it helps u dear

Explanation:

what mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 gram of water at 313 k. Hey! Thus, 31 g potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 g of water at 313 K