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xxMikexx [17]
1 year ago
11

The alkali metals play virtually the same general chemical role in all their reactions. (b) How is it based on atomic properties

?
Chemistry
1 answer:
vfiekz [6]1 year ago
6 0

b) It is based on atomic properties as alkali metals requires 7 more electrons to complete their outer orbit. And they try to give those electrons to other elements to obtain noble gas configuration.

Noble gases are the gases which do not react easily with anything. They are also called as Inert gases, and belongs to group 18 of the periodic table.

Alkali metals are the substances which are found in Group I of a periodic table. Mostly the elements which are present are:

  • Lithium (Li)
  • Sodium (Na)
  • Potassium (K)
  • Rubidium (Rb)
  • Cesium (Cs)
  • Francium (Fr)

Properties of alkali metals are:  Soft, shiny reactive metals. They are soft enough to cut with knife. Metals react with water and air quickly and gets tarnish, so pure metals are stored in container by dipping them in oil to prevent oxidation.

To know more about Alkali metals, refer to this link:

brainly.com/question/18153051

#SPJ4

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vitfil [10]

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Explanation :  

Half-life = 2.81 hr = 168.6 min

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{168.6min}

k=4.11\times 10^{-3}min^{-1}

Now we have to calculate the partial pressure of O_2

The balanced chemical reaction is:

                           2N_2O_5(g)\rightarrow 4NO_2(g)+O_2(g)

Initial pressure   760                0             0

At eqm.             (760-2x)            4x            x

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{P_o}{P_t}

where,

k = rate constant

t = time passed by the sample  = 215 min

a = initial pressure of N_2O_5 = 760 torr

a - x = pressure of N_2O_5 at equilibrium = (760-2x) torr

Now put all the given values in above equation, we get:

215=\frac{2.303}{4.11\times 10^{-3}}\log\frac{760}{760-2x}

x=222.93torr

The partial pressure of O_2 = x = 222.93 torr

7 0
3 years ago
Which (3 of the 4) quantities must be conserved in all chemical reactions?
Helen [10]

Mass, charge, and energy are conserved, no matter how much volume of
space they may be spread through either before or after the reaction.

Concerning density ...
Think about the fascinating classroom demonstration where the teacher
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excited, and it skates and skitters around on the surface of the water,
faster and faster, and eventually it explodes.  All the girls in the class
scream, while the guys are just sitting there and staring at the cloud
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7 0
3 years ago
The client's lab values are sodium 166 mEq/L, potassium 5.0 mEq/L, chloride 115 mEq/L, and bicarbonate 35 mEq/L. What condition
Fantom [35]

Answer:

The anion value of 21mEq/L suggest the client will have metabolic acidosis

Explanation:

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Using the above mentioned data

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maxonik [38]

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8 0
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Answer:

See explanation

Explanation:

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Hope this helps!

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3 years ago
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