We are asked to calculate the pH of the solution with 4.7×10−2 M in HClO4 and 5.1×10−2 M in HCl.
The pH of a compound determines its acidity.
▪ pH stands for the negative logarithmic function of hydronium ion concentration
▪ can be calculated using the following equation:
Strong acids are considered strong electrolytes. They completely dissociate into ions when dissolved in water.
• Strong binary acids – paired with a highly electronegative atom
Strong binary acids are: HCl, HBr, and HI
• Strong oxyacids (or oxoacids) - have 2 or more oxygens than hydrogens
Oxyacids → possess H+ ion, connected to nonmetal and oxygen
Common strong oxyacids are: HNO3, HClO3, HClO4, H2SO4
Exceptions to the rule are: Oxalic acid (H2C2O4) and Iodic acid (HIO3)
▪ both have 2 more O than H but are weak acids because carbon and iodine have low electronegativity
Determine the pH of each solution.
a solution that is 4.7×10−2 M in HClO4 and 5.1×10−2 M in HCl
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What scientific concept do you need to know in order to solve this problem?
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