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Ostrovityanka [42]
3 years ago
15

Below is a generic equation for a reaction. If I mix 2 units of A, with 6 units of B, which of the following is true?2A + 3B ? C

+ 3DA. There would be no reaction.B. Both reactants will fully react.C. Not enough information givenD. Substance B will be the limiting reactant.E. Substance A will be the limiting reacta
Chemistry
2 answers:
Allisa [31]3 years ago
7 0

Answer:

E. Substance A will be the limiting reactant.

Explanation:

Below is a generic equation for a reaction.

2A + 3B → C + 3DA

According to the balanced equation, the theoretical molar ratio of A to B is 2:3, that is, 2 moles of A react with 3 moles of B.

<em>If I mix 2 units of A, with 6 units of B, which of the following is true?</em>

<em>A. There would be no reaction.</em> FALSE. The reaction will occur until the limiting reactant is over

<em>B. Both reactants will fully react.</em> FALSE.

<em>C. Not enough information given.</em> FALSE.

<em>D. Substance B will be the limiting reactant.</em> FALSE. Substance B will be the reactant in excess because there are 6 moles and only 3 moles are required.

<em>E. Substance A will be the limiting reactant.</em> TRUE.

Svetradugi [14.3K]3 years ago
4 0

Answer:

substance A will be the limiting reactant. Substance B will be in excess. Option E is correct.

Explanation:

Step 1: Data given

We mix 2 units (moles) of A with 6 units(moles) of B

Step 2: The balanced equation:

2A + 3B → C + 3D

Step 3: Determine the limiting reactant

For 2 moles of A we need 3 moles of B to produce 1 mol of C and 3 moles of D

IF A would be the limiting reactant, it means it would completely be consumed ( 2 units).

B is in excess. there would react 2 *3/2 = 3 units.

There would remain 6 - 3 = 3 units of B

If B would be the limiting reactant, it means it would completely be consumed (6 units).

A would be in excess, there would react 6 * 2/3 = 4 units.

This would be impossible.

We can decide that substance A will be the limiting reactant. Substance B will be in excess. Option E is correct.

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That iron atom is oxidized. It loses two electrons.

Explanation:

Compare the formula of an iron atom and an iron(II) ion:

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