acids and bases
Homework Answers
The formula used for calculating the H+ from pH :
{H+} = 10-pH
For neutral water , the pH is 7
so (H+) in water = 10-7M
For coffee, the pH is 5
so(H+) in coffee = 10-5 M
By comapring H+ in water and coffee , we can say that tere are 100H+ more in coffee.
2) The pH of coffee is approximately 5.0. How many times greater is the [H'] in...
2) The pH of coffee is approximately 5.0. How many times greater is the [H'] in coffee than in neutral water? Ans: 3) Calculate the H' ion concentration in a 8.8 x 10-4M Ca(OH), solution. Ans: 4) Consider the weak acid CH COOH (acetic acid). If a 0.048 M CH:COOH solution is 5.2%) ionized, determine the [HO] concentration at equilibrium.
The pH of coffee is approximately 5.0. How many times greater is the [H3O+] in coffee...
The pH of coffee is approximately 5.0. How many times greater is the [H3O+] in coffee than in tap water having a pH of 8.0?
1. The pH of coffee is approximately 5.5. How many times greater is the (H') in Concom neutral water? Solution: 2....
1. The pH of coffee is approximately 5.5. How many times greater is the (H') in Concom neutral water? Solution: 2. Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3). How much limestone in kilograms is required to completely neutralize a 3.8 x 10°L lake with a pH of 4.5? Solution:
Acids and Bases 1) Which of the following is a general property of a basic solution?...
Acids and Bases 1) Which of the following is a general property of a basic solution? a. feels slippery b pH less than 7 c. tastes sour d. turns litmus paper red e. none of the above 2) If a vinegar sample has a pH of 5, the solution is which of the following: a. strongly acidic b. weakly acidic c neutral d. weakly basic e. strongly basic 3) Which of the following is a weak Arrhenius acid a. HNO3...
3,10 3. The pH of coffee is approximately 5.0. How many times greater is the [HO]...
3,10
3. The pH of coffee is approximately 5.0. How many times greater is the [HO] in coffee than in tap water having a pH of 8.0? Determine the plH of a KOH solution made by mixing 0.251 g KOH with enough water to make 1.0x102 mL of solution. 8. A) 0.62 B) 1.6 C) 30 D) 1,000 A) 1.35 B) 2.35 C) 7.00 D) 12.65 9. Assuming equal concentrations of conjugate base and acid, which one of the following...
Acids and bases
The acidity constants for citric acid are \(\mathrm{p} K_{a 1}=3.13, \mathrm{p} K_{a 2}=4.72,\) and \(\mathrm{p} K_{a 3}=6.33\)a. Write expressions for \(\alpha_{0}, \alpha_{1}, \alpha_{2},\) and \(\alpha_{3}\) as a function of the \(K_{o}\) values and \(\left\{\mathrm{H}^{+}\right\}\)b. Identify the region where each species is dominant.c. Determine which terms in the denominators for the \(\alpha\) values are significant at pH 7.5 (terms contributing less than \(5 \%\) to the summation can be considered negligible). For a solution with \(10^{-1} M\) total citrate, write out...
Please help!! I will rate all answers!! The OH-ion concentration in a certain ammonia solution is...
Please help!! I will rate all answers!!
The OH-ion concentration in a certain ammonia solution is 7.2 x 10-M. What is the pOH and pH? Ans: 3.14 and 10.86 What is the H30* ion concentration in a solution with a pOH of 3.9? Ans: 8 x 10-11M The pH of many cola-type soft drinks is about 3.0. a) Calculate the [H3O+] in soft drinks. Ans: 1 x 10-3M b) How many times greater is the H30concentration in these drinks than...
Part 1: Indicate whether each of the following compounds will give an acidic, basic or neutral...
Part 1: Indicate whether each of the following compounds will give an acidic, basic or neutral solution when dissolved in water. **please match the compound with its corresponding <, >, or = Clear All ammonium chloride barium hypochlorite calcium bromide ammonium bromide The pH will be less than 7. The pH will be approximately equal to 7. The pH will be greater than part 2: Indicate whether each of the following compounds will gave an acidic, basic or neutral solution...
O ACIDS AND BASES Making qualitative estimates of PH C... Each row of the table below...
O ACIDS AND BASES Making qualitative estimates of PH C... Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change its pH. initial type...
Use the References to access important values if needed for this question. Indicate whether each of the following...
Use the References to access important values if needed for this question. Indicate whether each of the following compounds will give an acidic, basic or neutral solution when dissolved in water Clear All ammonium bromide The pH will be less than 7. sodium hypochlorite The pH will be approximately equal to 7 barium perchlorate The pH will be greater than 7 ammonium nitrate Use the References to access important values if needed for this question. Indicate whether each of the...
2) The pH of coffee is approximately 5.0. How many times greater is the [H'] in coffee than in neutral water? Ans: 3) Calculate the H' ion concentration in a 8.8 x 10-4M Ca(OH), solution. Ans: 4) Consider the weak acid CH COOH (acetic acid). If a 0.048 M CH:COOH solution is 5.2%) ionized, determine the [HO] concentration at equilibrium.
1. The pH of coffee is approximately 5.5. How many times greater is the (H') in Concom neutral water? Solution: 2. Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3). How much limestone in kilograms is required to completely neutralize a 3.8 x 10°L lake with a pH of 4.5? Solution:
3,10
3. The pH of coffee is approximately 5.0. How many times greater is the [HO] in coffee than in tap water having a pH of 8.0? Determine the plH of a KOH solution made by mixing 0.251 g KOH with enough water to make 1.0x102 mL of solution. 8. A) 0.62 B) 1.6 C) 30 D) 1,000 A) 1.35 B) 2.35 C) 7.00 D) 12.65 9. Assuming equal concentrations of conjugate base and acid, which one of the following...
Please help!! I will rate all answers!!
The OH-ion concentration in a certain ammonia solution is 7.2 x 10-M. What is the pOH and pH? Ans: 3.14 and 10.86 What is the H30* ion concentration in a solution with a pOH of 3.9? Ans: 8 x 10-11M The pH of many cola-type soft drinks is about 3.0. a) Calculate the [H3O+] in soft drinks. Ans: 1 x 10-3M b) How many times greater is the H30concentration in these drinks than...
O ACIDS AND BASES Making qualitative estimates of PH C... Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change its pH. initial type...
Use the References to access important values if needed for this question. Indicate whether each of the following compounds will give an acidic, basic or neutral solution when dissolved in water Clear All ammonium bromide The pH will be less than 7. sodium hypochlorite The pH will be approximately equal to 7 barium perchlorate The pH will be greater than 7 ammonium nitrate Use the References to access important values if needed for this question. Indicate whether each of the...
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