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A sample of aqueous chlorine bleach solution was analyzed to contain 5.00% Cl(w/v) {or 5.00gcl per 100ml}. if the source if chlorine is calcium hypochlorite Ca(OC)2 (142.98), what is the % Ca(OCl)2 (w/v) in the bleach solution?
At a certain temperature, the solubility of potassium iodate, KIO3, is 41.1 g/L. Calculate its solubility product constant for this temperature.
Calculate the concentration of I- in a solution obtained by shaking 0.10 M KI with an excess of AgCl.
Question- Calculate the volume of 0.20M of acetic acid, .20M sodium acetate and pure water neede to maake 20.00mL of a buffer having pH=5.00. Repeat analogous, seperate calculations for buffers having pH=4.00 and pH=6.00.
Calculate the molarity of the solution produced by mixing the following substances. (Assume that the volumes are additive.) (a) 40.0 mL of 0.160 M NaCl and 65.0 mL of 0.133 M NaCl
The walls of the reaction flask or in the condenser?
The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, 25) and Ka3 = 4.2 × 10-13 at 25.0 °C.
Balance the following chemical reaction using the lowest integer coefficients, in acidic conditions I?(aq) + BrO3?(aq) ? HIO(aq) + Br?(aq)
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa=4.20) and 0.120 M sodium benzoate. How much of each solution should be mixed to prepare this fuffer
You have 500.0 mL of a buffer solution containing 0.20 M acetic acid (CH3COOH) and 0.30 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [Ka = 1.8 ´ 10-5]
Calculate the [Cr+3] in equilibrium with Cr(OH)4-(aq) when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at a pH of 7.3. Kf for Cr(OH)4-(aq) is 8.0 x 1029.
A balance is checked and found to be accurate and clean. After the lab, a spilled white solid is found on the balance. The only white substances available in the lab were barium chloride and sodium sulfate
Presume that 0.89g of water condenses on a 80.0g block of iron that is initially at 22C. If the heat released during condensation goes only to warming the iron block, explain what is the final temperature (in C) of the iron block. Presume a consta..
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