diff options
| -rw-r--r-- | headers/baseElement.h | 95 |
1 files changed, 60 insertions, 35 deletions
diff --git a/headers/baseElement.h b/headers/baseElement.h index 4285fc0..a3907fe 100644 --- a/headers/baseElement.h +++ b/headers/baseElement.h @@ -16,7 +16,9 @@ private: double specificHeatLiquid; double specificHeatGas; double meltingPoint; - double boilingPoint; + double boilingPoint;
+ string initialState = "";
+ string finalState = ""; protected: void setElementName(string value) { elementName = value; } @@ -47,8 +49,6 @@ public: } double totalHeat = 0; - string initialState = ""; - string finalState = ""; if (fromTemp == meltingPoint || fromTemp == boilingPoint) { cout << "What is the state of the element at the initial temperature?" << endl; @@ -101,38 +101,63 @@ public: double totalEntropyChange(double mass, double fromTemp, double toTemp) { - double totalEntropy = 0; - if (fromTemp <= meltingPoint && toTemp <= meltingPoint) - { - totalEntropy = mass * specificHeatSolid * log(toTemp / fromTemp); - } - else if (fromTemp <= meltingPoint && toTemp >= meltingPoint && toTemp <= boilingPoint) - { - totalEntropy = mass * specificHeatSolid * log(meltingPoint / fromTemp); - totalEntropy += mass * latentHeatOfFusion / meltingPoint; - totalEntropy += mass * specificHeatLiquid * log(toTemp / meltingPoint); - } - else if (fromTemp <= meltingPoint && toTemp >= boilingPoint) - { - totalEntropy = mass * specificHeatSolid * log(meltingPoint / fromTemp); - totalEntropy += mass * latentHeatOfFusion; - totalEntropy += mass * specificHeatLiquid * log(boilingPoint / meltingPoint); - totalEntropy += mass * latentHeatOfVaporization; - totalEntropy += mass * specificHeatGas * log(toTemp / boilingPoint); - } - else if (fromTemp >= meltingPoint && fromTemp <= boilingPoint && toTemp >= meltingPoint && toTemp <= boilingPoint) - { - totalEntropy = mass * specificHeatLiquid * log(toTemp / fromTemp); - } - else if (fromTemp >= meltingPoint && fromTemp <= boilingPoint && toTemp >= boilingPoint) - { - totalEntropy = mass * specificHeatLiquid * log(boilingPoint / fromTemp); - totalEntropy += mass * latentHeatOfVaporization; - totalEntropy += mass * specificHeatGas * log(toTemp / boilingPoint); - } - else if (fromTemp >= boilingPoint && toTemp >= boilingPoint) - { - totalEntropy = mass * specificHeatGas * log(toTemp / fromTemp); + if (fromTemp < 0 || toTemp < 0)
+ {
+ cout << "Temperature cannot be less than 0 K" << endl;
+ return 0;
+ }
+
+ double totalEntropy = 0;
+ string initialState = "";
+ string finalState = "";
+ if (fromTemp == meltingPoint || fromTemp == boilingPoint)
+ {
+ cout << "What is the state of the element at the initial temperature?" << endl;
+ if (initialState != "")
+ initialState = readElementState();
+ }
+ if (toTemp == meltingPoint || toTemp == boilingPoint)
+ {
+ cout << "What is the state of the element at the final temperature?" << endl;
+ if (finalState != "")
+ finalState = readElementState();
+ }
+
+ if (toTemp <= meltingPoint)
+ {
+ totalEntropy += mass * specificHeatSolid * log(toTemp / fromTemp);
+ if (toTemp == meltingPoint && finalState != "Solid")
+ totalEntropy += mass * latentHeatOfFusion / meltingPoint;
+ }
+ else if (toTemp <= boilingPoint)
+ {
+ if (fromTemp < meltingPoint)
+ totalEntropy += mass * specificHeatSolid * log(meltingPoint / fromTemp);
+ if (fromTemp == meltingPoint && initialState != "Liquid")
+ totalEntropy += mass * latentHeatOfFusion / meltingPoint;
+ if (fromTemp <= meltingPoint)
+ totalEntropy += mass * specificHeatLiquid * log(toTemp / meltingPoint);
+ else
+ totalEntropy += mass * specificHeatLiquid * log(toTemp / fromTemp);
+ if (toTemp == boilingPoint && finalState != "Liquid")
+ totalEntropy += mass * latentHeatOfVaporization / boilingPoint;
+ }
+ else
+ {
+ if (fromTemp < meltingPoint)
+ totalEntropy += mass * specificHeatSolid * log(meltingPoint / fromTemp);
+ if (fromTemp == meltingPoint && initialState != "Liquid")
+ totalEntropy += mass * latentHeatOfFusion / meltingPoint;
+
+ if (fromTemp < boilingPoint)
+ totalEntropy += mass * specificHeatLiquid * log(fromTemp / meltingPoint);
+ if (fromTemp == boilingPoint && initialState != "Gas")
+ totalEntropy += mass * latentHeatOfVaporization / boilingPoint;
+
+ if (fromTemp > boilingPoint)
+ totalEntropy += mass * specificHeatGas * log(toTemp / fromTemp);
+ else
+ totalEntropy += mass * specificHeatGas * log(toTemp / boilingPoint);
} return totalEntropy; } |