Question

The pH of two separate solutions, 1.0 M HNO3 and 1.0M HC H302, are measured. Which statement is true? The HNO3 has a higher pH because it is a strong acid. The HC2H302 has a higher pH because it is a weak acid, The HC2H302 has a higher pH because it has more acidic hydrogen atoms. The HC H30, has a lower pH because it has more acidic hydrogen atoms. The two solutions have the same pH because the concentrations are the same. Question 9 1 pts A two-step mechanism has been proposed for the reaction between NO2 and fluorine. Which piece(s) of data would lead a student to accept this mechanism? Select all that are correct. Step 1: NO2+F2-NOF+F (slow) Step 2: F + NO2NO2F (fast) Overall: 2NO2 +F22NO,F The rate increases with the use of a platinum catalyst. The rate doubles when [F] is doubled and [NO] is held constant. The rate doubles when (NO) is doubled and [F2] is held constant. The rate quadruples when [NO] is doubled and [F] is held constant. The rate quadruples when (F2) is doubled and [NO] is held constant The rate quadruples when (F2) and (NO2) are both doubled.

Answer 1

(0) HO H After cissociation 0 IM IM 0 0 AH N a • Cty come back to my u Rate quadruples when [Fa] & [NO] both doubled HNO₃ NO, Initially im CHCOOH CHy Coo® + HⓇ CHC H3 (2) Initially equilibrium (1-2) • HNO3 is a acid dissociated Completely CH₃COOH is a weak acid dissocfated to a acid dissocfated to a less extent More the dissociation more will be the Htion Conc, more will be the phi :. option a. The HNO3 has a higher pH to it is a stoon acid is the correct ans, Step 1 Notte NOF 4 F (slow) Step a → NOF fast as (Rate depend upon conc.oy Reactant in the slowest stopie RK [no_]C] option b R = K[2 F₂] [NO] = Q R 8. Rate doubles when [Fa] is doubled R"= k [NOR1CF2] = QR e Rate daulles when C No] is doubled R" - KLO NO 70] =4R F ANO Rate will be given option c option &