Ca(s) + 2HCl(aq) -----------> CaCl2(aq) + H2(g)
Theoretical yield of CaCl2 = 0.736g
Actual yield of CaCl2 = 0.644g
percent yield = actual yield *100/theoretical yield
= 0.644*100/0.736
= 87.5%
87.5% >>>>answer
QUESTION 12 Consider the following reaction Ca(s) + 2HCl(aq) --> CaCl2(aq) + H2(g) If the theoretical...
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%
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
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
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 9 Consider the following reaction Ca(s)2HCI(aq) ->CaCl2(aq) H2(g) How many moles of HCI are needed to form 3 moles of CaCl2? 0 1 mole 1.5 moles 3 moles 6 moles 8 moles
QUESTION 1 Consider the following chemical reaction: Mg(s) + 2HCl(aq) – MgCl2(aq) + H2(g) Which of the following changes will decrease the rate of this reaction? Adding more solid Mg. Adding a catalyst. Decreasing the pressure of H2. Decreasing the temperature. Increasing the concentration of HCI.
QUESTION 1 Consider the following chemical reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Which of the following changes will decrease the rate of this reaction? Adding more solid Mg. Adding a catalyst. Decreasing the pressure of H2. Decreasing the temperature. Increasing the concentration of HCI.
QUESTION 1 Consider the following chemical reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Which of the following changes will increase the rate of this reaction? Decreasing the concentration of HCI. O Adding more MgCl2. O Increasing the pressure of H2. Decreasing the temperature. Adding a catalyst. N QUESTION 2
Consider the reaction Ca(OH)2(aq) + 2HCl(aq)CaCl2(s) + 2H2O(l) for which H° = -30.20 kJ and S° = 205.9 J/K at 298.15 K. (1) Calculate the entropy change of the UNIVERSE when 1.934 moles of Ca(OH)2(aq) react under standard conditions at 298.15 K. Suniverse = ----------J/K (2) Is this reaction reactant or product favored under standard conditions? (3) If the reaction is product favored, is it enthalpy favored, entropy favored, or favored by both enthalpy and entropy? If the reaction is...
According to the equation: Zn(s) + 2HCl(aq) ----> H2(g) + ZnCl(aq), calculate the volume (L) of H2 gas that can be formed at 25 °C and a pressure of 854 mmHg when 25.0 g of Zn is used in the reaction.