A student attempted to identify an unknown compound by the method used in thisexperiment. She found that when she heated a sample weighing 0.5032 g , the mass dropped to 0.2663 . When the product was converted to a chloride, the mass went back up,0.3747g .a. Is the sample a carbonate?Yes / no (Circle one)Please provide reasoning below.b. What are the two compounds that might be in the unknown?orc. Write the balanced chemical equation for the overall reaction that occurs when each ofthese two original compounds is converted to a chloride. If the compound is a hydrogencarbonate, use the sum of Reactions 1 and 2 . If the sample is a carbonate, use Reaction 2 .Write the equation for a sodium salt and then for a potassium salt.d. How many moles of the chloride salt would be produced from one mole of the originalcompound?e. How many grams of the chloride salt would be produced from one molar mass of theoriginal compound?Molar masses : NaHCO3 ___g/mol Na2CO3___g/mol NaCl___g/mol KHCO3___g/mol k2CO3___g/mol KCl___g/mol If a sodium salt___ , original compound→___ gchloride if a potassium salt,___ g original compound →___ g chloride f. What is the theoretical value of Q , as found by Equation 3,if she has the Na salt? ___ if she has the K salt? ___g. What was the observed value of Q ? ___h. Which compound did she have as an unknown? ___
A student attempted to identify an unknown compound by the method used in this
experiment. She found that when she heated a sample weighing 0.5032 g , the mass dropped to 0.2663 . When the product was converted to a chloride, the mass went back up,0.3747g .
a. Is the sample a carbonate?
Yes / no (Circle one)
Please provide reasoning below.
b. What are the two compounds that might be in the unknown?
or
c. Write the balanced chemical equation for the overall reaction that occurs when each of
these two original compounds is converted to a chloride. If the compound is a hydrogen
carbonate, use the sum of Reactions 1 and 2 . If the sample is a carbonate, use Reaction 2 .
Write the equation for a sodium salt and then for a potassium salt.
d. How many moles of the chloride salt would be produced from one mole of the original
compound?
e. How many grams of the chloride salt would be produced from one molar mass of the
original compound?
Molar masses : NaHCO3 ___g/mol Na2CO3___g/mol NaCl___g/mol
KHCO3___g/mol k2CO3___g/mol KCl___g/mol
If a sodium salt___ , original compound→___ gchloride
if a potassium salt,___ g original compound →___ g chloride
f. What is the theoretical value of Q , as found by Equation 3,
if she has the Na salt? ___ if she has the K salt? ___
g. What was the observed value of Q ? ___
h. Which compound did she have as an unknown? ___
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