When a pendulum swings, if it is not continuously pushed it will not stop eventually because some of its energy is changed into.
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Answer:
The reaction will be non spontaneous at these concentrations.
Explanation:
Expression for an equilibrium constant :
Solubility product of the reaction:
Reaction between Gibb's free energy and equilibrium constant if given as:
Gibb's free energy when concentration and
Reaction quotient of an equilibrium = Q
- For reaction to spontaneous reaction:
.
- For reaction to non spontaneous reaction:
.
Since ,the value of Gibbs free energy is greater than zero which means reaction will be non spontaneous at these concentrations
Answer:
a. HCl.
b. 0.057 g.
c. 1.69 g.
d. 77 %.
Explanation:
Hello!
In this case, since the reaction between magnesium and hydrochloric acid is:
Whereas there is 1:2 mole ratio between them.
a) Here, we can identify the limiting reactant as that yielded the fewest moles of hydrogen gas product via the 1:1 and 2:1 mole ratios:
Thus, since hydrochloric yields fewer moles of hydrogen than magnesium, we realize it is the limiting reactant.
b) Here, we use the molar mass of gaseous hydrogen (2.02 g/mol) to compute the mass:
c) Here, we compute the mass of magnesium associated with the yielded 0.0248 moles of hydrogen:
Thus, the mass of excess magnesium turns out:
d) Finally, we compute the percent yield, considering 0.044 g is the actual yield and 0.057 g the theoretical yield:
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