Which of the following (assuming the same concentration in water) would make a solution with the lowest hydrogen ion concentration? Group of answer choices H2S (Ka= 8.9×10−8) NH4+ (Ka= 5.6 × 10−10)   NH3 ( Kb= 1.8 × 10−5) HC2H3O2 (Ka= 1.8×10−5) HCl

A particular solution has a [OH^−1] = 8.31×10^−5 . Calculate the [H+1]for this solution. A) 1.20×10^−10 B) 7.36×10^−10 C) 8.31×10^9 D) 3.18×10^−11 E) 2.62×10^−10

What is the pHpH of a 0.0075 MM solution of HClHCl? Express your answer using two decimal places.

Determine the pHpH for the following solutions: A) [H3O+]=7.7×10−2M[H3O+]=7.7×10−2M, Express your answer using two decimal places. B) [OH−]=8.5×10−4M[OH−]=8.5×10−4M, Express your answer using two decimal places. C) [OH−]=0.006M[OH−]=0.006M, Express your answer using one decimal place.

Use your knowledge of acids to fill out the chart below

Which of the following shows the correct relationship between the ions in aqueous solutions at 25°C? ) [H30*1×[OH¯] = 1.0 x 10-7 2) [H,o"] + [OH] = 1.0 x 10-14 3 [H30"]< [OH] = 1.0 x 10-14 4 [H,0"] ÷ [OH] = 1.0 x 10-14 5 [H30"] x [OH] = 1.0 x 10-14

The concentration of H+ in a glass of milk is around 3.2 x 10-7 The pH must then be around (Round to the 2nd decimal)

Indicate the concentration of each ion or molecule present in the following solutions. Part A 0.50 M NaNO3 Express your answer numerically using two significant figures. If there is more than one answer, separate them by a comma. ΜΕ ΑΣΦ Submit Request Answer Part B 1 ? M 2.3x10-2 M MgSO4 Express your answer numerically using two significant figures. If there is more than one answer, separate them by a comma. ΜΕ ΑΣΦ Submit Request Answer Part C M 4.00x10-2 M C6H12O6 Express your answer numerically using three significant figures. If there is more than one answer, separate them by a comma. ΜΕ ΑΣΦ 1 ? M LG 512

Caffeine, C8H10N4O2 is a weak base. What is the value of Kb for caffeine if a solution at equilibrium has [C8H10N4O2] = 0.050 M, [C8H10N4O2 H+] = 5.0 × 10−3 M, and [OH−] = 2.5 × 10−3 M?

A certain weak acid, HAHA, has a Ka�a value of 4.4×10−7.  Calculate the percent ionization of HAHA in a 0.10 M� solution. Express your answer as a percent using two significant figures.