Below are the problems:
1. After balancing the following equation, what would be the
coefficient that would be needed for H3PO4? Mg + H3PO4 ? Mg3(PO4)2
+ H2
2. According to the following balanced chemical equation, how
many moles of iron(III)chloride will be produced from 6.2 moles of
iron? 2Fe(s) + 3Cl2(g) ? 2FeCl3(s)
3. How many atoms are there in 35.7 mole sample of silicon?
4. According to the following balanced chemical equation, how
many moles of iron(III)chloride will...
1) Cr2O7^2- (aq) + NO2^-(aq) -> Cr^3+(aq) + NO3^-(aq)
Whats the coefficient of water after balancing redox rxn, which
in acidic solution?
2) Which solution will increase molar solubility of CuCO3
(Ksp=2.3*10^-10) at 298K? (Ksp of Cu(OH)2 is 2.2*10^-20)
HCl, NaOH, Na2CO3
I seriously have no idea with this problem please explain with
details thank you so much
Complete and balance the following redox equation. What is the
coefficient of H2O
when the equation is balanced with the set of smallest whole-number
coefficients?
H2O
+MnO4?
+ I?
?MnO2
+ IO3?
(basic solution)
Please explain how to do this problem using the half reaction
method
Consider the reaction represented by the equation:
Fe3+(aq) + SCN-(aq) <====> FeSCN2+(aq) ddddd
§Trial #1:
6.00 M Fe3+(aq) and 10.0 M SCN-(aq) are mixed at a certain
temperature and at equilibrium the concentration of FeSCN2+(aq) is
4.00 M.
What is the value for the equilibrium constant for this
reaction?
k=0.333
§Trial #2:
Initial: 10.0 M Fe3+(aq) and 8.00 M SCN−(aq) (same temperature
as Trial #1)
Equilibrium: ? M FeSCN2+(aq)
answer
5.00 M FeSCN2+
how can I solve trial #2??
The acid C6H5COOH dissociates according to the equation:
C6H5COOH (aq) ⇌ C6H5COO‐ (aq) + H+ (aq) K = 6.4 x 10‐5 If the
initial [C6H5CO2H] is 4.59 x 10‐3M, what are the equilibrium
concentrations of C6H5COO‐ and H+ for this dislocation
reaction?
Given the following balanced reaction,
O2(g) + 4 H+(aq) + 4 Fe2+(aq) →
2 H2O(l) + 4 Fe3+(aq)
What is the equilibrium constant (K)?
The following information may be useful.
O2(g) + 4 H+(aq) + 4e- → 2
H2O(l) Eº = 1.23 V
Fe3+(aq) + e- → Fe2+(aq) Eº =
0.77 V
Consider the following reaction: Fe3+(aq)+SCN−(aq)⇌FeSCN2+(aq) A
solution is made containing an initial [Fe3+] of 1.2×10−3 M and an
initial [SCN−] of 7.8×10−4 M . At equilibrium, [FeSCN2+]= 1.7×10−4
M .Calculate the value of the equilibrium constant (Kc).