Chemistry, 11.01.2020 02:31 Sawas

Zn(s) is used to reduce other compounds in chemical reactions. if a chemist needs a substance that is more effective in its reducing ability, which of the following species would be the best choice?
a) na
b) h+
c) k+
d) cl−

Answers: 3

Show answers

Answers

Answer from: dogsarecute278

Sodium element has the highest reducing ability.

Explanation:

Reducing ability of an element is defined as the ability for an element to loose electrons. It helps the other element to gain electrons and thus act as reducing agent.

Reducing agent undergoes oxidation reaction.

The substance having highest positive E^o reduction potential will always get reduced and will undergo reduction reaction. Or, the substance having highest negative E^o reduction potential will always get oxidized and will undergo oxidation reaction.

For the given options:

Option A: Sodium

The standard reduction potential of this element will be:

$Na\rightarrow Na^++e^-;E^o_{Na^+/Na}=-2.71V$

Option B: Hydrogen ion

This element cannot loose further electrons. So, now it will gain electrons.

The standard reduction potential of this element will be:

$2H^++2e^-\rightarrow H_2;E^o_{H^+/H_2}=0V$

Option C: Potassium ion

This element cannot loose further electrons. So, now it will gain electrons.

The standard reduction potential of this element will be:

$K^++e^-\rightarrow K;E^o_{K^+/K}=2.93V$

Option D: Chlorine ion

The standard reduction potential of this element will be:

$Cl_2+2e^-\rightarrow 2Cl^-;E^o_{Cl_2/Cl^-}=1.36V$

As, the standard reduction potential of sodium element is more negative, it will act as reducing agent.

Hence, sodium element has the highest reducing ability.

Answer from: Quest

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

Answer from: Quest

може ли да зареждате повече информация, моля

Another question on Chemistry

Chemistry, 21.06.2019 17:00

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Answers: 1

Answer

Chemistry, 22.06.2019 00:30

Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.

Answers: 1

Answer

Chemistry, 22.06.2019 04:00

Actual ingredients of lab (the cookies i am actually making) 1/2 cup sugar 1/2 cup brown sugar 1 1/3 stick margarine 1 egg 1/2 tsp salt 1 tsp vanilla 1/2 tsp baking soda 1 1/2 cup flour 1 1/3 cup chocolate chip can you answer the questions below ? discussion 1. suppose you are given the following amounts of ingredients: 1 dozen eggs 24 tsp. of vanilla 1 lb. (82 tsp.) of salt 1 lb. (84 tsp.) of baking soda 3 cups of chocolate chips 5 lb. (11 cups) of sugar 2 lb. (4 cups) of brown sugar 1 lb. (4 sticks) of margarine a. for each ingredient, calculate how many cookies could be prepared if all of that ingredient were consumed. (for example, the recipe shows that using 1 egg- with the right amounts of the other ingredients- yields 24 cookies. how many cookies can you make if the recipe is increased proportionately for 12 eggs? ) b. to determine the limiting reactant for the new ingredients list, identify which ingredient will result in the fewest number of cookies. c. what is the maximum number of cookies that can be produced from the new amounts of ingredients?

Answers: 1

Answer

Chemistry, 22.06.2019 06:30

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Answers: 2

Answer

You know the right answer?

Zn(s) is used to reduce other compounds in chemical reactions. if a chemist needs a substance that i...

Questions