Left Panel
A is an acid. Not the answer.
B is correct. That would be a base. But it is not an Arrhenius base. Keep reading.
C that is exactly what an Arrhenius base is.
D. No an acid of some sort would accept OH ions.
Right Panel
D is concentrated and it is also a weak base. Good cleaning fluid. Smells awful but it works.
The molarity of the potassium hydroxide required to neutralize 60.0 mL of 0.0100 M H3PO4 is 0.02M.
<h3>How to calculate molarity?</h3>
The molarity of a solution can be calculated using the following formula:
CaVa = CbVb
Where;
- Ca = concentration of acid
- Cb = concentration of base
- Va = volume of acid
- Vb = volume of base
60 × 0.0100 = 30 × Cb
0.6 = 30Cb
Cb = 0.6/30
Cb = 0.02M
Therefore, molarity of the potassium hydroxide required to neutralize 60.0 mL of 0.0100 M H3PO4 is 0.02M.
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The order of reducing strength are as follow
E > D > F .
Since there is no reaction with D and salt of E it indicates that D is less reactive than the E. When D react with the salt F , a reaction take place which indicates that D is more reactive than F.
So reactivity can be given in the order
E > D > F .
So, F is least reactive so it neither displace E nor D
So, in first reaction
Metal F + Salt of E ------ No reaction will be observed
No reaction is observed between metal F and salt E
B) As we founded that E is more reactive than D and, D react with H2O
E is also get to react with H2O.
Thus, the order of reducing strength are as follow
E > D > F .
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Answer:
When I'm writing about atoms, often what I'm writing about applies to (monatomic) ions too. It's slightly annoying to add "(or ions)" after every mention of atoms, where a word that refers to both atoms and ions would be ideal. Does such a word exist?
There is "element", but often this is used to refer to multiple atoms of the same element, whereas "atom" and "ion" clearly refer to a single atom or ion.
An example: "An isotope is an atom (or ion) of the same element but with a different number of neutrons."