Question

another know by - product of the reaction of bleach and ammonia is nitrogen trichloride (ncl3). nitrogen trichloride is a yellow, oily, pungent - smelling liquid, often found as a by - product of chemical reactions between nitrogen - containing compounds and chlorine. it is highly explosive. to determine the quantities of bleach and ammonia that when mixed together, produce ncl3, again varying quantities of bleach was added to eight different ammonia - water solutions and the resulting ncl3 from each mixture was measured. a solution of 1.0 mole (mol) of nh3 in 1 kg of water was used in each trail. a certain quantity of naocl was added to each solution; the quantity added was gradually increased for each trail. the amount of nitrogen trichloride produced in each trail was recorded in table 1.
experiment 3
in yet another reaction, bleach and ammonia combined under certain conditions to produce a compound know as chloramine. chloramine (nh2cl) is a toxic substance commonly used in low concentrations as a disinfectant in municipal water systems as an alternative to chlorination. to determine the mixture of bleach and ammonia at which nh2cl is produced, a varying amount of ammonia was added to eight different bleach - water solutions and the resulting chlorine gas from each mixture was collected and measured. a solution of 1.0 mole (mol) of naocl in 1 kg of water was used in each trail. a certain quantity of nh3 was added to each solution; the quantity of ammonia added was gradually increased for each trial. the amount of chloramine produced in each trail was recorded in table 1.

1. based on the results of experiment 3, as the nh3 level increased from 0.50 to 4.00 mol, the greatest increase in the amount of nh2cl produced occurred.

• between the trials of 3.50 and 4.00 mol of nh3.
• between the trials of 1.50 and 2.00 mol of nh3. h
• between the trials of 0.50 and 1.00 mol of nh3. g
• between the trials of 2.50 and 3.00 mol of nh3. j

Explanation:

To solve this, we analyze the trend of NH₂Cl production as NH₃ increases. Typically, in such reaction - yield experiments, the greatest increase in product (NH₂Cl) occurs when the reactant (NH₃) is added in a range where the reaction rate or yield has the steepest rise. When NH₃ is added between 0.50 and 1.00 mol, the system is likely in a phase where the reaction is still far from saturation, and the availability of NH₃ (the limiting reactant - like in the initial stages) leads to a large increase in product formation. As NH₃ is added more (like in higher ranges), the reaction may approach saturation, so the increase in product becomes less. So the greatest increase in NH₂Cl production occurs between 0.50 and 1.00 mol of NH₃.

Answer:

C. between the trials of 0.50 and 1.00 mol of NH3. G