Determine the Kb for CN^-. The Ka for HCN is 4.9 × 10^-10

Q: The CO2 we breathe reacts with water in our blood to form the weak acid H2CO3. What mole ratio of…

A: Given:Ka of H2CO3 is 4.4 ✕ 10−8

Q: Determine the pH and percent ionization for a hydrocyanic acid (HCN) solution of concentration 2.9 x…

A: Given: Concentration of HCN = 2.9× 10-3 M = 0.0029 M                          And Ka of HCN = 4.9…

Q: What is the pH of a 0.0556 M NH, (aq) solution at room temperature? The base ionization constant of…

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Q: For part, b would the calculations be the same for NO3^- (aq) and CO^2+ (aq), meaning those species…

A: For the species, Co2+ (aq) and NO3- (aq), would be the standard conditions remain the same, that is,…

Q: A 0.021 M solution of a weak acid (HA) has a pH of 4.84. What is the Ka of the acid?   (Enter your…

A: Consider the solution of a weak acid (HA) is as follows; Reaction:     HA aq    +    H2O l    ⇌…

Q: water-softening ion exchange systems is

A: The prese of Ca , Mg salts results hardness of water . This Ca or Mg salts react with chemical…

Q: Be sure to answer all parts. A 0.021 M solution of a weak acid (HA) has a pH of 4.33. What is the Ka…

A: To find the ( K{a} ) of the weak acid ( HA ), we can use the formula for the pH of a weak acid…

Q: Calculate the pH of a 3.11 M solution of KA given that  for the acid:  HA Ka = 4.21⋅10−44.21⋅10-4

A: A solution of 3.11 M KA . The Ka for HA acid is 4.21 × 10-4 .We have to calculate the pH of the…

Q: odium nitrate (NaNO2) was often added to processed meat to enhance color and to protect against the…

A: NaNO2 belongs to a category of a salt of a weak acid and strong base: NaNO2 ⇌Na+ +NO2- NO2-+H2O ⇌…

Q: weak

A: We used the Hinderson equation for calculating the concentration of salt ( NaA ) and it's acid ( HA…

Q: Write the dissociation equation and calculate the pH for a solution of 2.5 M HNO2 nitrous acid, Ka…

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Q: An acid is found to have a pKa = –1.15 at 25 °C. What is the Ka (to two decimal places) of the acid?

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Q: In the laboratory, a general chemistry student measured the pH of a 0.580 M aqueous solution of…

A: Method 1:Dissociation equation of aqueous aniline solution will beC6H5NH2 + H2O ⇌ C6H5NH3+ + OH-Now…

Q: The chemical calcium hypochlorite is used to control the growth of bacteria and algae in swimming…

A: A question about measuring the quantities of Calcium hypochlorite, which is to be answered.

Q: Which of the following elements is easiest to ionize (has the lowest ionization energy)? O A. Si O…

A: Ionisation energy is the minimum amount of energy required to remove the outer most electron from an…

Q: A chemist dissolves 340. mg of pure potassium hydroxide in enough water to make up 80. mL of…

A: Mass of potassium hydroxide mKOH = 340 mg Volume of solution V = 80 mL The temperature of the…

Q: 6. Look at Equation (6), the Henderson-Hasselbalch equation. Under what conditions will pH = pKa?…

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Q: Determine the pH

A: The scale which is used to analyze the acidity and basicity of an aqueous solution is called as pH…

Q: a. If the hydrogen ion concentration in a solution is 7.69 x 10-3 mol/L, the pH is b. If the pH of a…

A: Given :-  a)[H+] = 7.69 × 10-3 mol/L  b)pH = 3.150 To calculate :-  pH in first part and H+ ion…

Q: if magnesium hydroxide were used instead of naoh how many moles would it take to combine with three…

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Q: Hydrazine, N2H4, is used as a rocket fuel, but also as a reactant in organic chemistry. The K of…

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Q: What is the pH of a 0.10 M solution of an acid that has a KA of 1.8 x 10–5?

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Q: A 59.3 mL sample of 0.423 M NH4NO3 is diluted with water to a total volume of 245.3 mL. What is the…

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Q: m-CPBA P (Ph) 3 1. 2. Н30- со, MgBr OH OH OH ||

A: The question is based on organic reactions.      we need to identify the product formed and explain…

Q: An organic acid has pK = 3.74. What is its K, value?

A: Ka is acid dissociation constant and it is related to pKa as negative logarithm of it which may be…

Q: (b) If the pH of water in a lake falls below a value of 5, fish often fail to reproduce. How much…

A: pH is a measure of acidity. pH = – log[H+] [H+]= 10–pH

Q: Calculate the pH of the acid or base with the given information. Given pH of 0.1 M ammonia…

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Q: Describe the selectivity and reactivity of LDA

A: In this question, we will Discuss about selectivity and Reactivity of LDA  You can see details…