中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.
下列说法正确的是
| A: 需要加热才能发生的反应一定是吸热反应 |
| B: 放热反应在常温下一定很容易发生 |
| C: 吸热反应在一定的条件下也能发生 |
| D: 焓变的符号是ΔH，单位是kJ·mol－1，反应热的单位是kJ |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Y+N5bqU5piv5LiN5piv4oCc5a655piT5Y+R55Sf4oCd5LiO5b6I5aSa5Zug57Sg55u45YWz77yM5LiO5Y+N5bqU55qE54Ot5pWI5bqU5rKh5pyJ57ud5a+555qE5YWz57O744CCPC9wPg==
- 答案：Qw==
PHA+6Kej77yaQeOAgemcgOimgeWKoOeDreaJjeiDveWPkeeUn+eahOWPjeW6lOS4jeS4gOWumuaYr+WQuOeDreWPjeW6lO+8jOWmgumTneeDreWPjeW6lOmcgOimgemrmOa4qeS4i+WPkeeUn++8jOS9huaYr+ivpeWPjeW6lOaYr+aUvueDreeahO+8jOaVhUHplJnor6/vvJs8YnI+QuOAgeaUvueDreWPjeW6lOacieeahOmcgOWKoOeDre+8jOacieeahOS4jemcgOWKoOeDre+8jOWmgumTneeDreWPjeW6lOWwsemcgOimgemrmOa4qeS4i+aJjeWPkeeUn++8jOivpeWPjeW6lOaYr+aUvueDreeahO+8jOaVhULplJnor6/vvJs8YnI+Q+OAgeacieeahOWQuOeDreWPjeW6lOWcqOW4uOa4qeS4i+S5n+iDveWPkeeUn++8jOacieeahOWcqOS4gOWumueahOadoeS7tuS4i+iDveWPkeeUn++8jOaVhUPmraPnoa7vvJs8YnI+ROOAgeeEk+WPmOeahOespuWPt+aYr+KWs0jvvIzljZXkvY3mmK9rSuKAom1vbOKIkjHvvIzlj6/ku6XnlKjnhJPlj5jooajnpLrlj43lupTng63vvIzmraTml7blj43lupTng63ljZXkvY3mmK9rSuKAom1vbOKIkjHvvIzmlYVE6ZSZ6K+v77yOPGJyPuaVhemAiUPvvI48YnI+PC9wPg==
本课配套习题挑战模式3/5
单选题
难度系数：
3.下列关于化学反应焓变的叙述中,正确的是
| A: 化学反应的焓变与反应的方向性无关 |
| B: 化学反应的焓变直接决定了反应的方向 |
| C: 焓变为正的反应都是吸热反应 |
| D: 焓变为正的反应都能自发进行 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Yaz5a6a5Y+N5bqU55qE5pa55ZCR6Zmk5LqG54ST5Y+Y5LmL5aSW6L+Y5pyJ54a15Y+Y55qE5rip5bqm55qE5Zug57Sg44CC
- 答案：Qw==
5Y+N5bqU55qE5pa55ZCR5oCn5piv55SxKM6USC1UzpRTKeWGs+WumueahCzkuI7OlEjjgIHOlFPjgIFU6YO95pyJ5YWzLOeEk+WPmOWPquihqOi+vuWMluWtpuWPjeW6lOaYr+mHiuaUvuiDvemHj+i/mOaYr+WQuOaUtuiDvemHjyzkuI3og73nlKjmnaXni6znq4vliKTmlq3lj43lupTnmoToh6rlj5HmgKfjgII=
本课配套习题挑战模式4/5
单选题
难度系数：
4.
下列说法正确的是
| A: 放热反应一定是自发进行的反应 |
| B: 化学反应的熵变与反应的方向无关 |
| C: 焓变小于0而熵变大于0的反应肯定是自发的 |
| D: 只有不需要任何条件就能够自动进行的过程才是自发过程 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Y+N5bqU6L+b6KGM55qE5pa55ZCR5pei5LiO5Y+N5bqU55qE54Ot5pWI5bqU5pyJ5YWz77yM6L+Y5LiO5Y+N5bqU55qE54a15Y+Y5Y+K5rip5bqm5pyJ5YWzPC9wPg==
- 答案：Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.下列说法中，正确的是
| A: 在一个确定的化学反应中，反应物的总焓与反应产物的总焓一般是不同的 |
| B: 在一个确定的化学反应中，反应物的总焓一定高于反应产物的总焓 |
| C: 化学反应的焓变就是反应热 |
| D: 对于ΔH＞0的化学反应，反应物的总焓大于产物的总焓，为放热反应 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Y+N5bqU54mp5LiO55Sf5oiQ54mp55qE5pmX5LiA6Iis5LiN55u4562J77yM5L2G5LiN6IO956Gu5a6a5ZOq5LiA5Liq5q+U6L6D5aSn44CC
- 提示2：54ST5Y+Y5LiO5Y+N5bqU54Ot5piv5Lik5Liq5LiN5ZCM55qE5qaC5b+177yM5LiA6Iis5oOF5Ya15LiL77yM5Lik6ICF55qE5aSn5bCP55u45ZCM44CC
- 答案：QQ==
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
