Problem 3.63
Several brands of antacids use Al(OH)3 to react with stomach acid, which contains primarily HCl: αAl(OH)3(s)+βHCl(aq)âγAlCl3(aq)+δH2O(l)
Part A
Balance this equation.
Express your answer as a balanced chemical equation. Identify all of the phases in your answer.
Al(OH)3+3HClâAlCl3+3H2O
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Part B
Calculate the number of grams of HCl that can react with 0.490 g of Al(OH)3.
m = .77
g
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Part C
Calculate the number of grams of AlCl3 formed when 0.490 g of Al(OH)3 reacts.
m = 0.34
g
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Part D
Calculate the number of grams of H2O formed when 0.490 g of Al(OH)3 reacts.
m = .77
g
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Problem 4.71
Indicate the concentration of each ion or molecule present in the following solutions.
Part A
0.25 M NaNO3
Express your answer numerically using two significant figures. If there is more than one answer, separate them by a comma.
0.25,0.25
M
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Part B
1.7Ã10â2M MgSO4
Express your answer numerically using two significant figures. If there is more than one answer, separate them by a comma.
1.3,1.3
M
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Part C
2.00Ã10â2M C6H12O6
Express your answer numerically using three significant figures. If there is more than one answer, separate them by a comma.
M
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Part D
A mixture of 45.0mL of 0.272M NaCl and 65.0mL of 0.0247M (NH4)2CO3. Assume that the volumes are additive.
Express your answer numerically using three significant figures. If there is more than one answer, separate them by a comma.
0.0146,0.111,0.0292,0.0146
M
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Problem 4.73
Part A
You have a stock solution of 16.0 M NH3. How many milliliters of this solution should you dilute to make 1250 mL of 0.280 M NH3?
V = mL
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Part B
If you take a 10.0-mL portion of the stock solution and dilute it to a total volume of 0.450 L , what will be the concentration of the final solution?
M = 0.022
M
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Problem 3.63 Several brands of antacids use Al(OH)3 to react with stomach acid, which contains primarily HCl: αAl(OH)3(s)+βHCl(aq)âγAlCl3(aq)+δH2O(l) | Part A Balance this equation. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.
SubmitMy AnswersGive Up Incorrect; Try Again; 5 attempts remaining Part B Calculate the number of grams of HCl that can react with 0.490 g of Al(OH)3.
SubmitMy AnswersGive Up Incorrect; Try Again; 4 attempts remaining Part C Calculate the number of grams of AlCl3 formed when 0.490 g of Al(OH)3 reacts.
SubmitMy AnswersGive Up Incorrect; Try Again; 5 attempts remaining Part D Calculate the number of grams of H2O formed when 0.490 g of Al(OH)3 reacts.
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