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balandron [24]
3 years ago
15

Consider the energy diagram below.

Chemistry
2 answers:
dalvyx [7]3 years ago
6 0

Answer:

Explanation:

B because it has a lower activation energy

dimulka [17.4K]3 years ago
4 0

Answer:

B

Explanation:

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Calculate the pH of the solution that results when 20 mL of 0.2M HCOOH is mixed with 25mL of 0.2M NaOH solution.(post-equivalenc
Paul [167]

The pH of the solution : 12

<h3>Further explanation</h3>

Reaction

HCOOH    +     NaOH   ⇒     HCOONa   +   H₂O

mol HCOOH =

\tt 20~ml\times 0.2~M=4~mlmol

mol NaOH =

\tt 25~ml\times 0.2~M=5~mlmol

Mol NaOH>mol HCOOH ⇒ at the end of the reaction there will be a strong base remains from mol NaOH, so that the pH is determined from [OH⁻]

ICE method :

HCOOH    +     NaOH   ⇒     HCOONa   +   H₂O

4                          5

4                          4                     4                   4

0                          1                      1                    1

Concentration of [OH⁻] from NaOH :

\tt \dfrac{1~mlmol}{20+25~ml}=0.02

pOH=-log[OH⁻]

pOH=-log 10⁻²=2

pH+pOH=14

pH=14-2=12

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3 years ago
A student performs an exothermic reaction in a beaker and measures the temperature. If the thermometer initially reads 35 degree
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Answer:

C

Explanation:

Exothermic means that heat is released from the reaction

7 0
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Question 1 of 10
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I believe the answer is C.
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Is there a way to stop radioactive decay?
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Answer:

Nitrogen (N) on Edge20

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