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statuscvo [17]
2 years ago
9

Question 10 I need help

Chemistry
1 answer:
VashaNatasha [74]2 years ago
6 0
Sorry I can’t see it very well
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What is the pH difference of two samples if the concentration of [H+] ions is 1000-fold less in the second sample?
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The correct answer is a. This is because the pH of a solution is defined as -log10(concentration of H+ ions). An inverse logarithmic scale such as this means that a solution with a lower concentration of H+ ions will have a higher pH than one with a higher concentration. Therefore we know that the pH of the second sample will be higher than the first.

Since the logarithmic scale has the base 10, a change by 1 on the scale is a consequence of multiplication/division of the H+ concentration by a factor of 10. As the scale is inverse, this means that a decrease of concentration by factor 1000 is equivalent to increasing the pH by (1000/10) = 3.
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Which of the following is the best choice for presenting the percent
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Question 2 Unsaved Which of the following chemical formulas shows a covalent compound? a)CO2 b)MgO c)NaCl d)HBr
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Palmitic acid C16H32O2 is a dietary fat found in beef and butter. The caloric content of palmitic acid is typical of fats in gen
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C16H32O2(aq) --> 16CO2(g) + 16H2O(l) ... said its wrong though? 
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<span>Try </span><span>C16H32O2(s) + 23O2(g) --> 16CO2(g) + 16H2O(l) 

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3. Sodium carbonate (Na2CO3) is formed from the reaction between
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Na2C03 is formed through the reaction of

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NaOH -> strong base

H2CO3-> weak acid

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