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3. a. If "Epsom salt", MgSO4. xH₂O, is heated to 250 ° C, all the water of hydration is lost. Write the chemical equation that represents this process. (The coefficient for the water will be X since you don't know the formula for the hydrate.) b. On heating a 1.687 g sample of the hydrate, 0.824 g of Mg SO4 remains. How many molecules of water occur per formula unit of MgSO4. Write the complete formula of the hydrate and state the complete name.

3. a. If "Epsom salt", MgSO4. xH₂O, is heated to 250 ° C, all the water of hydration is lost. Write the chemical equation that represents this process. (The coefficient for the water will be X since you don't know the formula for the hydrate.) b. On heating a 1.687 g sample of the hydrate, 0.824 g of Mg SO4 remains. How many molecules of water occur per formula unit of MgSO4. Write the complete formula of the hydrate and state the complete name.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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please solve a and b 

3. a. If "Epsom salt”, MgSO4. xH₂O, is heated to 250 ° C, all the water of hydration is lost. Write the chemical equation that represents this process. (The coefficient for the water will be X since you don't know the formula for the hydrate.) b. On heating a 1.687 g sample of the hydrate, 0.824 g of Mg SO4 remains. How many molecules of water occur per formula unit of MgSO4. Write the complete formula of the hydrate and state the complete name.
Transcribed Image Text:3. a. If "Epsom salt”, MgSO4. xH₂O, is heated to 250 ° C, all the water of hydration is lost. Write the chemical equation that represents this process. (The coefficient for the water will be X since you don't know the formula for the hydrate.) b. On heating a 1.687 g sample of the hydrate, 0.824 g of Mg SO4 remains. How many molecules of water occur per formula unit of MgSO4. Write the complete formula of the hydrate and state the complete name.
Expert Solution
Step 1

Epsom salt = MgSO4. xH2O

xH2O is the water of crystallization attached physically to the salt.

 

a) On heating epsom salt at 2500 C, all the water of crystallisation will be lost and the salt will become unhydrous.

MgSO4. xH2O →MgSO4 +  xH2O

 

 

 

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