Ammonia rapidly reacts with hydrogen chloride, making ammonium chloride. calculate the number of grams of excess reactant when 6.91 g of nh3 reacts with 4.61 g of hcl.

Given:

Ammonia

Hydrochloric acid

To find:

The amount excess of reactant left over in ammonia.

Solution:

Ammonia reacts rapidly with hydrochloric acid to form Ammonium Chloride

Equation for the above statement is derived as:

One gram per mole of ammonia

Similarly for 6.91g of

One gram per mole of hydrochloric acid

Similarly for 4.61g of

From the above information we can say that h c l is a limiting reactant.

Limiting reactant is an element that consumes lesser product in a chemical reaction.

Thus the amount of excess reactant is calculated by using the following formula

Amount of excess reactant left over in

Result:

Amount of excess reactant left over ammonia

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )