* WORTH 30 POINTS + BRAINLIEST *
2 answers:
Answer:
B. T1 is longer than T2, and the concentration of products the end of T1 is lower than that of T2.
Explanation:
Consider a hypothetical reaction:
A → B
The rate of the reaction can be expressed as in terms of the rate of disappearance of reactant (-dA/dt) or appearance of product (dB/dt)
Here dt is the time interval
dA = change in reactant concentration [A(final) - A(initial)]
dB = change in product concentration [B(final)-B(initial)]
It is given that:
At time interval T1, Rate(1) = 0.0011 M/s
At time interval T2, Rate(2) = 0.0015 M/s
Here, Rate (2) > Rate (1): this implies that the denominator for Rate(2) is smaller than Rate (1) i.e. T2 is smaller than T1. Since the rate of conversion is smaller at T1 this implies that the concentration of products will be lower at T1 than at T2.
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Answer: It is very important to know the activity tendencies of the elements. The activity tendencies tells us about whether the element is reactive or not.
In the redox-reaction where there is a need to know the oxidizing agent and reducing agent, we can know it easily from the activity tendencies. The elements lying above the reactivity series are better reducing agents.
In the substitution reactions, the activity tendencies helps us to know which element will replace the other. The element lying above in the series will replace the element lying below it.
where, N is an element that lies above in the reactivity series
M is an element that lies below in the reactivity series
When Na3po4 dissolves in water to produce an electrolytic solution. The osmolarity of a 2. 0 × 10-3 m Na3po4 solution is 0.008osmol/L.
Osmolarity is defined as the number of osmoles of solute particles per unit volume of the solution.
In other words osmolarity is the multiple if molarity
Osmolarity = i× molarity
Here i represents the van't Hoff factor,
⇒
3 Moles of + 1 mole
= 4
The number of moles of particles of solute produced in solution are actually called osmoles.
As a result, the van't Hoff factor will be equal to
i=4 Moles ions produced (osmoles) 1mole .dissolved =4
Since we know that,
=
Osmolarity =
=
Thus, the Osmolarity of given solution is 0.008 osmol/L.
learn more about Osmolarity:
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