Homework Answers
balanced equation tells us that 2 moles HCl and 1 mol Ca react to produce 1 mole CaCl2 and 1 mole H2 gas[ these numbers came from stochiometric coefficients of each compounds ]
2 mole HCl gives 1 mole CaCL2
so for 3 mole CaCl2 there must be 2*3 = 6 mole HCl
moles of HCl needed = 6 moles
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QUESTION 9 Consider the following reaction Ca(s)2HCI(aq) ->CaCl2(aq) H2(g) How many moles of HCI are needed...
QUESTION 12 Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) If the theoretical...
QUESTION 12 Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) If the theoretical yield of CaCl2 is 0.736 g and the actual yield is 0.644 g, what is the percent yield? 87.5% 47.4% 96.5% 79% 114%
QUESTION 10 Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) What is the...
QUESTION 10 Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) What is the mass of CaCl2 that can be produced from 0.621 g of HCI? 0.204 g 0.408 g 0.945 g 1.06 g1.98 g
QUESTION 13 Given the following reaction Ca(s) + 2HCl(aq) - CaCl2(aq) + H2(g) 11.00 g of...
QUESTION 13 Given the following reaction Ca(s) + 2HCl(aq) - CaCl2(aq) + H2(g) 11.00 g of Ca reacts with 0.850 g HCl and 1.21 g CaCl2 are produced, what is the theoretical yield, the percent yield and the limiting reactant? 2.77 .43.7%, Ca limiting 2.77 9, 93.8%, HCI limiting 1.29 g, 43.7%, Ca limiting 1.29 g, 93.8% HCI limiting 2.779, 46.6%, Ca limiting 1.29 9. 46.6%, HCI limiting
Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) If the theoretical yield of...
Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) If the theoretical yield of CaCl2 is 0.736 g and the actual yield is 0.720 g, what is the percent yield? A.)53.0% b.)32.6% c.)95.5% d.)97.8% e.)102%
Given the following reaction Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g) If 0.500 g of Ca...
Given the following reaction Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g) If 0.500 g of Ca reacts with 0.850 g HCl and 1.21 g CaCl2 are produced, what is the theoretical yield, the percent yield and the limiting reactant? 1.38 g, 87.7%, Ca limiting 1.38 g, 93.8%, HCl limiting 1.29 g, 87.7%, Ca limiting 1.29 g, 93.8% HCl limiting 1.38 g, 92.8%, Ca limiting 1.29 g, 92.8%, HCl limiting
Review Problem 6.084 Calcium hydroxide reacts with hydrochloric acid by the following equation: Ca(OH)2(aq)2HCI(aq)CaCl2(aq) +2H20() Calculate...
Review Problem 6.084 Calcium hydroxide reacts with hydrochloric acid by the following equation: Ca(OH)2(aq)2HCI(aq)CaCl2(aq) +2H20() Calculate AHo in kilojoules for this reaction, using the following equations as needed. CaO(s)+2HCI(aq) CaCl2(aq) +H20() AHo=-186 k) CaO(s) +H20()Ca(OH)2(s) AHO Ca(OH)2(s)Ca(OH)2(aq) AHo = -12.6 kJ (dissolving in water) -65.1 kJ AHo kJ The number of significant digits is set to 3; the tolerance is +/-2 % Show Work is REQUIRED for this question: Open Show Work SHOW HINT LINK TO TEXT
Question 16 In the reaction of magnesium metal with hydrochloric acid: Mg(s) + 2HCl(aq) --> MgCl2(aq)...
Question 16 In the reaction of magnesium metal with hydrochloric acid: Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g) How many moles of hydrogen are produced if 10 moles of HCI react?
For reaction CaCL2(aq) + Na2CO3 --> CaCO3(s) + NaCL(aq). Questions: 1. For reaction CaCl2(aq) + Na2CO3...
For reaction CaCL2(aq) + Na2CO3 --> CaCO3(s) +
NaCL(aq).
Questions: 1. For reaction CaCl2(aq) + Na2CO3 --> CaCO3(s) + 2 NaCl(aq). If 3.250 g of CaCl2 reacts with access of Na2CO3, how many grams of CaCO3 can be produced theoretically? 2. For reaction CaCl2(aq) + NaCO3 --> CaCO3(s) + 2 NaCl(aq). If 50.0 ml of 1.235 M CaCl2 reacts with 10.00 ml. of 5.386 M Na2CO3, which one is the limiting reactant? 3. For reaction CaCl2(aq) + Na2CO3 --> CaCO3(s)...
Calcium metal reacts with acid to produce hydrogen gas: Ca(s) + 2 HCl(aq) + H2(g) +...
Calcium metal reacts with acid to produce hydrogen gas: Ca(s) + 2 HCl(aq) + H2(g) + CaCl2(aq) How many liters of hydrogen gas (at STP) would be produced in a reaction that consumed 3.6 g of HCI?
Ca(OH)2 (aq) + 2HCl (aq) CaCl2 (aq) + H2O (l) An aqueous solution of Ca(OH)2with a...
Ca(OH)2 (aq) + 2HCl (aq) CaCl2 (aq) + H2O (l)
An aqueous solution of Ca(OH)2with a concentration of
0.161 M was used to titrate 25.00 mL of aqueous HCl. 18.63
mL of the Ca(OH)2was required to reach the endpoint of
the titration. An aqueous solution of Ca(OH)2with a
concentration of 0.161 M was used to titrate 25.00 mL of
aqueous HCl. 18.63 mL of the Ca(OH)2was required to
reach the endpoint of the titration.
A) How many moles of base...
QUESTION 12 Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) If the theoretical yield of CaCl2 is 0.736 g and the actual yield is 0.644 g, what is the percent yield? 87.5% 47.4% 96.5% 79% 114%
QUESTION 10 Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) What is the mass of CaCl2 that can be produced from 0.621 g of HCI? 0.204 g 0.408 g 0.945 g 1.06 g1.98 g
QUESTION 13 Given the following reaction Ca(s) + 2HCl(aq) - CaCl2(aq) + H2(g) 11.00 g of Ca reacts with 0.850 g HCl and 1.21 g CaCl2 are produced, what is the theoretical yield, the percent yield and the limiting reactant? 2.77 .43.7%, Ca limiting 2.77 9, 93.8%, HCI limiting 1.29 g, 43.7%, Ca limiting 1.29 g, 93.8% HCI limiting 2.779, 46.6%, Ca limiting 1.29 9. 46.6%, HCI limiting
Review Problem 6.084 Calcium hydroxide reacts with hydrochloric acid by the following equation: Ca(OH)2(aq)2HCI(aq)CaCl2(aq) +2H20() Calculate AHo in kilojoules for this reaction, using the following equations as needed. CaO(s)+2HCI(aq) CaCl2(aq) +H20() AHo=-186 k) CaO(s) +H20()Ca(OH)2(s) AHO Ca(OH)2(s)Ca(OH)2(aq) AHo = -12.6 kJ (dissolving in water) -65.1 kJ AHo kJ The number of significant digits is set to 3; the tolerance is +/-2 % Show Work is REQUIRED for this question: Open Show Work SHOW HINT LINK TO TEXT
Question 16 In the reaction of magnesium metal with hydrochloric acid: Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g) How many moles of hydrogen are produced if 10 moles of HCI react?
For reaction CaCL2(aq) + Na2CO3 --> CaCO3(s) +
NaCL(aq).
Questions: 1. For reaction CaCl2(aq) + Na2CO3 --> CaCO3(s) + 2 NaCl(aq). If 3.250 g of CaCl2 reacts with access of Na2CO3, how many grams of CaCO3 can be produced theoretically? 2. For reaction CaCl2(aq) + NaCO3 --> CaCO3(s) + 2 NaCl(aq). If 50.0 ml of 1.235 M CaCl2 reacts with 10.00 ml. of 5.386 M Na2CO3, which one is the limiting reactant? 3. For reaction CaCl2(aq) + Na2CO3 --> CaCO3(s)...
Calcium metal reacts with acid to produce hydrogen gas: Ca(s) + 2 HCl(aq) + H2(g) + CaCl2(aq) How many liters of hydrogen gas (at STP) would be produced in a reaction that consumed 3.6 g of HCI?
Ca(OH)2 (aq) + 2HCl (aq) CaCl2 (aq) + H2O (l)
An aqueous solution of Ca(OH)2with a concentration of
0.161 M was used to titrate 25.00 mL of aqueous HCl. 18.63
mL of the Ca(OH)2was required to reach the endpoint of
the titration. An aqueous solution of Ca(OH)2with a
concentration of 0.161 M was used to titrate 25.00 mL of
aqueous HCl. 18.63 mL of the Ca(OH)2was required to
reach the endpoint of the titration.
A) How many moles of base...
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