indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances. a. Lemon juice b. Water c. Aqueous solution of MgO d. Aqueous solution of Na2O

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.

B? i feel like this is a trick  

Answerbonded to an amino group(nh2);