Determine the temperature change when 4.00 g of

(a) KCl;

(b) MgBr₂;

(c) KNO₃;

(d) NaOH is dissolved in 100. g of water.

Assume that the specific heat capacity of the solution is 4.18 J · K^–1 · g^–1 and that the enthalpies of solution in Table 5D.3 are applicable.

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TABLE 5D.3 Limiting Enthalpies of Solution, AHsol/(kJ.mol-1), at 25 °C* Anion Cation lithium sodium fluoride chloride bromide iodide hydroxide carbonate sulfate nitrate +4.9 - 37.0 -48.8 - 23.6 - 18.2 -2.7 - 29.8 -63.3 -7.5 - 44.5 +1.9 +3.9 -0.6 - 26.7 +20.4 -2.4 +34.9 -23.8 potassium - 17.7 +17.2 +19.9 +20.3 -57.1 - 30.9 ammonium -1.2 +14.8 +16.0 +13.7 +25.7 +6.6 silver -22.5 +65.5 +84.4 +112.2 +22.6 +17.8 magnesium - 12.6 - 160.0 -185.6 213.2 -90.9 -91.2 calcium +11.5 -19.2 -18.0 -81.3 -329 - 368 -103.1 - 119.7 -385 aluminum -27 - +2.3 - 16.7 - +41.8 - 25.3 - 13.1 - - 350