Predicting Spontaneity Does temperature affect spontaneity? Consider the equation for G. = - G H TS The and change ______________________ as temperature changes. H S The presence of in the equation for indicates that temperature may greatly T G affect G. Suppose a reaction has both a ______________ value and a _____________ H S value. If the reaction occurs at a low temperature, the value for will be TS _____________ and will have little impact on the value of G. The value of will be similar to the value of and will have a positive G H value. When the same reaction proceeds at a high enough temperature, ___________ will be larger than and will be negative. H G Increasing the temperature of a reaction can make a nonspontaneous reaction spontaneous. A nonspontaneous reaction cannot occur unless some _____________________ is added to the system.
Predicting Spontaneity Does temperature affect spontaneity? Consider the equation for G. G = H - TS The H and S change ______________________ as temperature changes. The presence of T in the equation for G indicates that temperature may greatly affect G. Suppose a reaction has both a ______________ H value and a _____________ S value. If the reaction occurs at a low temperature, the value for TS will be _____________ and will have little impact on the value of G. The value of G will be similar to the value of H and will have a positive value. When the same reaction proceeds at a high enough temperature, ___________ will be larger than H and G will be negative. Increasing the temperature of a reaction can make a nonspontaneous reaction spontaneous. A nonspontaneous reaction cannot occur unless some _____________________ is added to the system.
notes_packet_ch_10.docx