linux - Wordpress Opening From Wrong Directory

I have an Amazon ec2 m3 medium instance running AMI(RedHat based) Linux.

I am trying to host multiple domains on this instance by adding this at the end of httpd.conf:

        ServerAdmin email@gmail.com
        DocumentRoot /var/www/html/domain1
        ServerName domain1.com
        ErrorLog logs/domain1.com_error_log
        CustomLog logs/domain1.com_access_log common



    ServerAdmin email@gmail.com
    DocumentRoot /var/www/html/
    ServerName domain2.com
    ErrorLog logs/domain2.com-error_log
    CustomLog logs/domain2.com-access_log common

Now here is my problem:

When I open domain1.com it opens just fine, but when I open the IP of server in the browser domain1.com opens.

Contents of domain1.com are stored in 192.168.1.1/domain1/ OR /var/www/html/domain1

The directory /var/www/html is supposed host domain2.com in future.

So when I open the IP, the contents of /var/www/html/ should be displayed. Instead, I see the Wordpress installation of /var/www/html/domain1/
I have also tried deleting the .htaccess file from each of the two directories.