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3 years ago

5. When would it be useful to know whether a chemical is an acid or base? Give an example.'

Chemistry

1 answer:

iris [78.8K]3 years ago

4 0

Answer:

To determine whether a substance is an acid or a base, count the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased that substance is the acid (donates hydrogen ions). If the number of hydrogens has increased that substance is the base (accepts hydrogen ions).

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Substance P is carbon.

stepan [7]

Explanation:

substance Q could be oxygen (O2)

substance R could be carbon dioxide (CO2)

4 0

2 years ago

Consider the reaction at 500 ° C 500°C . N 2 ( g ) + 3 H 2 ( g ) − ⇀ ↽ − 2 NH 3 ( g ) K c = 0.061 N2(g)+3H2(g)↽−−⇀2NH3(g)Kc=0.06

Sav [38]

Answer:

Q = 0.061 = Kc

Explanation:

Step 1: Data given

Temperature = 500 °C

Kc=0.061

1.14 mol/L N2

5.52 mol/L H2

3.42 mol/L NH3

Step 2: Calculate Q

Q=[products]/[reactants]=[NH3]²/ [N2][H2]³

If Qc=Kc then the reaction is at equilibrium.

If Qc<Kc then the reaction will shift right to reach equilibrium.

If Qc>Kc then the reaction will shift left to reach equilibrium.

Q = (3.42)² / (1.14 * 5.52³)

Q = 11.6964/191.744

Q = 0.061

Q = Kc the reaction is at equilibrium.

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2 years ago

Which contains more molecules; 1mol H2O2, 1mol C2H6, or 1mol CO?

ser-zykov [4K]

Answer:

C2H6

Explanation:

8 0

2 years ago

What energy does a rock resting on a hilltop store?

Hunter-Best [27]

Answer:

gravitational energy

Explanation:

It is gravitational (potential) energy because of the place that the rock holds in the gravitational field. It has potential to move downward, because of gravity.

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2 years ago

Ozone (O 3) is made of three atoms of oxygen. It is _

kykrilka [37]

An element I think maybe

3 0

2 years ago

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