Chemistry, 27.02.2020 19:10 esmemaluma00

Caz(PO4)2 + H2504 - CaSO4+H3PO4
Balance this reaction if necessary
balanced
13.3.2
1.2.3.3
D
3.2.13

Answers: 2

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Answer from: sosa1k18

Ca3(PO4)2 + 3H2SO4 —> 3CaSO4 + 2H3PO4

The coefficients are 1, 3, 3, 2

Explanation:

Ca3(PO4)2 + H2SO4 —> CaSO4 + H3PO4

From the above equation,

There are 3 atoms of Ca on the left and 1 atom of Ca on the right. To balance Ca, put 3 in front of CaSO4 as shown below

Ca3(PO4)2 + H2SO4 —> 3CaSO4 + H3PO4

Now, we have 3 atoms of SO4 on the right and 1atom on the left. To balance SO4, put 3 in front of H2SO4 as shown below:

Ca3(PO4)2 + 3H2SO4 —> 3CaSO4 + H3PO4

Looking closely, there are 6 atoms of H on the left and 3 on the right. Therefore, it is balanced by by putting 2 in front of H3PO4 as shown below:

Ca3(PO4)2 + 3H2SO4 —> 3CaSO4 + 2H3PO4

The coefficients are 1, 3, 3, 2

Answer from: Quest

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form( $n_2$ ) .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

Answer from: Quest

14 days is the half-life of phosphorus-32

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Caz(PO4)2 + H2504 - CaSO4+H3PO4
Balance this reaction if necessary
balanced
13.3.2...