Will the dew point change with increasing temperature if the amount of moisture in the air does not change

To determine whether the dew point will change with increasing temperature while keeping the amount of moisture constant, you need to understand the relationship between temperature, moisture content, and dew point.

The dew point is the temperature at which the air becomes saturated with moisture, causing water vapor to condense into liquid water. This condensation occurs when the air cools down below its dew point.

The dew point depends on two factors: the amount of moisture in the air and the air temperature. These factors are related in a way that can be described using the concept of relative humidity.

Relative humidity is the amount of moisture in the air compared to the maximum moisture the air can hold at a given temperature. As temperature increases, the air's capacity to hold moisture also increases. Therefore, when the amount of moisture in the air remains constant, the relative humidity decreases with increasing temperature.

Given that the dew point is the temperature at which the air reaches 100% relative humidity, if the moisture content in the air remains the same while the temperature increases, the relative humidity will decrease. Consequently, the dew point will also decrease.

So, to answer your question directly, if the amount of moisture in the air does not change but the temperature increases, the dew point will decrease.