Question 1
Assume that an aqueous solution of hydroxide ion, OH
-, represented by unshaded spheres, is allowed to mix with a solution of an acid, H
nA, represented by gray spheres. Three possible outcomes are represented by boxes (a)-(c), where the black spheres represent A
n-, the anion of the acid. For clarity H
2O molecules are not shown.
Which outcome corresponds to the reaction:
HCN + OH
- → H
2O + CN
-?
◦ box (a)
◦ box (b)
◦ box (c)
◦ None of these
Question 2
Assume that an aqueous solution of hydroxide ion, OH
-, represented by unshaded spheres, is allowed to mix with a solution of an acid, H
nA, represented by gray spheres. Three possible outcomes are represented by boxes (a)-(c), where the black spheres represent A
n-, the anion of the acid. For clarity H
2O molecules are not shown.
Which outcome corresponds to the reaction:
H
2SO
4 + 2 OH
- → 2 H
2O + SO
42-?
◦ box (a)
◦ box (b)
◦ box (c)
◦ None of these
An intake manifold gasket that failed and allowed coolant to be drawn into the cylinder(s).
Paraboloid Solution
with solution
With solution
What is the pH of the solution?
What is the pH of a solution of 0.300 M HNO₂ containing 0.190 M NaNO₂? (Ka of HNO₂ is 4.5 × ...