the answer is c because when you take a nickel and fluorine you get Ni3+
Answer:
Molarity of
solution is 0.0928 M.
Explanation:
Balanced equation: ![5Fe^{2+}+MnO_{4}^{-}+8H^{+}\rightarrow 5Fe^{3+}+Mn^{2+}+4H_{2}O](https://tex.z-dn.net/?f=5Fe%5E%7B2%2B%7D%2BMnO_%7B4%7D%5E%7B-%7D%2B8H%5E%7B%2B%7D%5Crightarrow%205Fe%5E%7B3%2B%7D%2BMn%5E%7B2%2B%7D%2B4H_%7B2%7DO)
Number of moles of
in 10.8 mL of 0.0215 M
solution
=
= 0.000232 moles
Let's assume molarity of
solution is S(M)
Number of moles of
in 12.50 mL of S(M)
solution
=
= 0.0125S moles
According to balanced equation, 5 moles of
react with 1 mol of
So, 0.0125S moles of
react with
moles of
Hence, ![\frac{0.0125S}{5}=0.000232](https://tex.z-dn.net/?f=%5Cfrac%7B0.0125S%7D%7B5%7D%3D0.000232)
or, S = 0.0928
So, molarity of
solution is 0.0928 M.
Answer:
HCl is not a catalyst because these are not used up during the chemical reactions.
Explanation:
Hello there!
In this case, according to the performed experiments, it is possible for us to realize that HCl cannot be a catalyst for this reaction because it is used up during the reaction. This is explained by the fact that catalyst are able to return to the original form once the reaction has gone to completion; this is the example of palladium in the hydrogenation or dehydrogenation of hydrocarbons depending on the case. Moreover, we know that the catalysts increase the reaction rate because they decrease the activation energy of the reaction and therefore the student observed such increase.
Best regards!
Pb(OH)2 + 2 HCl = 2 H2O + PbCl2
Answer:
false
Explanation:
Hope the answer was usefull for us