We have (a) 50.0 mL of 0.10 M NH3 solution, (b) 50.0 mL of 0.12 M HNO3 solution, (c) 50.0 mL of 0.12 M NaOH solution, and (d) 50.0 mL of 0.06 M HClO4 solution. Can you make a buffer by combining two of these solutions? If so, which ones? What would be the pH of the buffer solution? Please...
Calculate the pH for both a 0.100 M solution of HClO4 and a 0.100 M solution of a HClO (Ka = 2.9 × 10–8)? (Don't forget significant figures!)
(7) 15 points An aqueous solution contains 36.00 mmol of sodium cyanide (pK. - 4.800). in 32.0 mL water. Various volumes of strong species are added to the solution. (a) Find the pH when no amount of strong species has been added to the solution. (That is, determine the pH of the original solution). pH (a)=. 3 sig fig (b)...
Question 1 a. How many mol of solid LiA would have to be added to 1.0 L of a 4.974 M HA solution in order to obtain a buffer of 2.68? (The Ka for HA is 3.51⋅10^-7). b. Calculate the pH at the equivalence point for the titration of 2.480 M B: (a weak base with pKb = 6.28) with...
7.Calculate the amounts of the required chemicals for preparing the following acetic acid/acetate buffer solution and its pH values. Please give detail steps of your calculation and use proper significant numbers. No points will be given if only answers are given without detail and reasonable calculations (subtotal 15 pts): A. In the first step, if you are required to prepare...
Which one is a polyprotic acid in aqueous solution? A: Li(OH)2 B: HClO4 C: H2O2 D: H2SO4 Please explain "polyprotic acid"
consider the titration of a weak monoprotic acid (HA) with a strong base. If the titration has begun, but the equivalence point has not yet been reached, which of the following is true: A) The solution is a bugger and the HH equation can be used to compute the solution pH B) The excess titrant will dominate and control the...
The main commercial source of bromine is A. silver bromide ore. B. seawater. C. the Frasch process. D. phosphate rock. E. the Ostwald process. 14. What element is the most abundant by mass in Earth's crust? A. Fe B. H C. K D. P E. O 15. List the following acids in order of increasing acid strength: HOCl, HClO3, HClO4....
A 23.00 ?mL sample of an unknown HClO4 solution requires titration with 20.12 mL of 0.2000 M NaOH to reach the equivalence point. The neutralization reaction is: HClO4(aq)+NaOH(aq)?H2O(l)+NaClO4(aq) What is the concentration of the unknown HClO4 solution? express your answer using four Sig figs.
1. An aqueous solution contains 0.28 M hypochlorous acid. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.)0.14 mol HClO4 0.142 mol NaOH 0.28 mol NaBr 0.29 mol NaClO 0.29 mol HClO4 2. A 1.00 liter solution contains 0.31 M ammonia and 0.40...