Solubility of a Salt - Chemistry

posted by .

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

b) How many grams of potassium nitrate should be added to 100 mL of water at 25°C 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

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Solubility of a Salt - Chemistry

    a) How many grams of KNO_3 should be added to 100 mL of water at 25°C to make a saturated solution?
  2. solubility graph

    A mass of 30 f of potasium nitrate is dissolved in 100 cm3 of water at 100gC. How many more grams of potassium nitrate must be added to saturate the solution?
  3. Chemistry- Solubility Curves

    If 50 grams of water saturated with potassium chlorate at 23*C is slowly evaporated to dryness, how many grams of the dry salt will be recovered?
  4. Physical Science

    Suppose you dissolve 40g of potassium nitrate in 100 cm3 of water at 100 C. If half the solution os poured out, how many grams of potassium nitrate will the remaining solution contain?
  5. AP Chemistry

    The solubility of sodium nitrate is 32 grams in 50.0 grams of water at 60 degrees C. If 60 grams of potassium nitrate are mixed with 50.0 grams of water, determine the percentage of sodium nitrate that remains undissolved.
  6. AP Chemistry

    The solubility of sodium nitrate is 32 grams in 50.0 grams of water at 60 degrees C. If 60 grams of potassium nitrate are mixed with 50.0 grams of water, determine the percentage of sodium nitrate that remains undissolved.
  7. Chemistry

    A saturated solution of potassium nitrate in water is prepared at 70.0*C then cooled to 55.0*C how many grams of potassium nitrate crystallized--- how do I determine this using my graph with everyone's numbers
  8. CHEMISTRY

    Write the net ionic equation for the reaction between...(and MUST INCLUDE STATES, please post answers to all so i can verify if im correct and explanation to one of them) a) potassium hydroxide and copper(I) nitrate b) potassium sulfite …
  9. soran university

    1. Which salt is LEAST soluble at 0 ºC? 2. How many grams of sodium nitrate, NaNO3, are soluble in 100 g of water at 10 ºC?
  10. Chemistry

    Nitrogen can also be produced from sodium metal and potassium nitrate by the reaction: Na(s) +KNO3 (s) --> K2O(s) +Na2O(s) + N2(g) If we generate oxygen by the thermal decomposition of potassium chlorate: 2KClO3(s) --> 2KCl(s) …

More Similar Questions