Saturday
March 28, 2015

Homework Help: Solubility of a Salt - Chemistry

Posted by J.M. on Tuesday, October 10, 2006 at 9:52pm.

a) How many grams of potassium nitrate (KNO_3) can be dissolved in 100 mL of water at 30C, 60C, and 70C?

b) How many grams of potassium nitrate should be added to 100 mL of water at 25C to make a saturated solution?

c) The solubility of potassium nitrate increases as temperature increases. When KNO_3 dissolves, is the process endothermic or exothermic?


Don't you have some solubility tables? You need some type of information to makes these calculations. Some of this information may be available in reference manuals but I'm wondering if the problem doesn't have some kind of preamble that provides this.For #3, you might put this in the form of an equation.
KNO3(s) + heat ==> KNO3(aq). Looking at the equation should answer your question.

salt

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

soran university - 1. Which salt is LEAST soluble at 0 C? 2. How many grams of ...
AP Chemistry - The solubility of sodium nitrate is 32 grams in 50.0 grams of ...
AP Chemistry - The solubility of sodium nitrate is 32 grams in 50.0 grams of ...
solubility graph - A mass of 30 f of potasium nitrate is dissolved in 100 cm3 of...
Chemistry - A saturated solution of potassium nitrate in water is prepared at 70...
CHEMISTRY - Write the net ionic equation for the reaction between...(and MUST ...
Chemistry- Solubility Curves - If 50 grams of water saturated with potassium ...
Physical Science - Suppose you dissolve 40g of potassium nitrate in 100 cm3 of ...
chemistry - Potassium nitrate is made by adding potassium chloride to hydrogen ...
Chemistry - A reaction was run where lead nitrate and potassium iodide were ...

Members