(a) at 10°c, 8.9 10−5 g of agcl(s) will dissolve in 100. ml of water. (i) write the equation for the dissociation of agcl(s) in water. (ii) calculate the solubility, in mol l-1, of agcl(s) in water at 10°c. (iii) calculate the value of the solubility-product constant, ksp, for agcl(s) at 10°c. (b) at 25°c, the value of ksp for pbcl2(s) is 1
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Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
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(a) at 10°c, 8.9 10−5 g of agcl(s) will dissolve in 100. ml of water. (i) write the equation for the...
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