(2) 12 grams of KClO3 in 200 grams of water (4) 30 grams of NaCl in 200 grams of water
One hundred grams of water is saturated with NH4Cl at 50oC. According to Table G, if the temperature is lowered to 10oC, what is the total amount of NH4Cl that will precipitate? (1) 5.0 g (2) 17 g (3) 30. g (4) 50. g
Choice 3; 52g-32g=30g
1 Solubility data for four different salts in water at 60oC are shown in the table below.
Which salt is most soluble at 60oC? (1) A (2) B (3) C (4) D
Choice D =0.5g/g H2O
2 Base your answers on the information below. When cola, a type of soda pop, is manufactured, CO2(g) is dissolved in it. 1. A capped bottle of cola contains CO2(g) under high pressure. When the cap is removed, how does pressure affect the solubility of the dissolved CO2(g)?
As pressure decreases solubility decreases
2. A glass of cold cola is left to stand 5 minutes at room temperature. How does temperature affect the solubility of the CO2(g)?
As temperature increases solubility decreases
3. Draw a set of axes and label one of them "Solubility” and the other "Temperature." 4. Draw a line to indicate the solubility of CO2(g) versus temperature on the axes drawn in part a.
The graph show the decrease in solubility as temperature increases
11 Which must be a mixture of substances? (1) solid (2) liquid (3) gas (4) solution
Base your answers to questions 56 through 58 on the information below.
A student uses 200 grams of water at a temperature of 60°C to prepare a saturated solution of potassium chloride, KCl.
56 Identify the solute in this solution.
The solute is KCl
57 According to Reference Table G, how many grams of KCl must be used to